diff options
author | Matt Caswell <matt@openssl.org> | 2015-01-22 03:40:55 +0000 |
---|---|---|
committer | Matt Caswell <matt@openssl.org> | 2015-01-22 09:20:09 +0000 |
commit | 0f113f3ee4d629ef9a4a30911b22b224772085e5 (patch) | |
tree | e014603da5aed1d0751f587a66d6e270b6bda3de /crypto/srp | |
parent | 22b52164aaed31d6e93dbd2d397ace041360e6aa (diff) | |
download | openssl-0f113f3ee4d629ef9a4a30911b22b224772085e5.tar.gz |
Run util/openssl-format-source -v -c .
Reviewed-by: Tim Hudson <tjh@openssl.org>
Diffstat (limited to 'crypto/srp')
-rw-r--r-- | crypto/srp/srp.h | 148 | ||||
-rw-r--r-- | crypto/srp/srp_lcl.h | 23 | ||||
-rw-r--r-- | crypto/srp/srp_lib.c | 545 | ||||
-rw-r--r-- | crypto/srp/srp_vfy.c | 1034 | ||||
-rw-r--r-- | crypto/srp/srptest.c | 290 |
5 files changed, 1000 insertions, 1040 deletions
diff --git a/crypto/srp/srp.h b/crypto/srp/srp.h index c4017b3d4c..49cf960347 100644 --- a/crypto/srp/srp.h +++ b/crypto/srp/srp.h @@ -1,7 +1,8 @@ /* crypto/srp/srp.h */ -/* Written by Christophe Renou (christophe.renou@edelweb.fr) with - * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr) - * for the EdelKey project and contributed to the OpenSSL project 2004. +/* + * Written by Christophe Renou (christophe.renou@edelweb.fr) with the + * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the + * EdelKey project and contributed to the OpenSSL project 2004. */ /* ==================================================================== * Copyright (c) 2004 The OpenSSL Project. All rights reserved. @@ -11,7 +12,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -57,116 +58,113 @@ * */ #ifndef __SRP_H__ -#define __SRP_H__ +# define __SRP_H__ -#ifndef OPENSSL_NO_SRP +# ifndef OPENSSL_NO_SRP -#include <stdio.h> -#include <string.h> +# include <stdio.h> +# include <string.h> #ifdef __cplusplus extern "C" { #endif -#include <openssl/safestack.h> -#include <openssl/bn.h> -#include <openssl/crypto.h> +# include <openssl/safestack.h> +# include <openssl/bn.h> +# include <openssl/crypto.h> -typedef struct SRP_gN_cache_st - { - char *b64_bn; - BIGNUM *bn; - } SRP_gN_cache; +typedef struct SRP_gN_cache_st { + char *b64_bn; + BIGNUM *bn; +} SRP_gN_cache; DECLARE_STACK_OF(SRP_gN_cache) -typedef struct SRP_user_pwd_st - { - char *id; - BIGNUM *s; - BIGNUM *v; - const BIGNUM *g; - const BIGNUM *N; - char *info; - } SRP_user_pwd; +typedef struct SRP_user_pwd_st { + char *id; + BIGNUM *s; + BIGNUM *v; + const BIGNUM *g; + const BIGNUM *N; + char *info; +} SRP_user_pwd; DECLARE_STACK_OF(SRP_user_pwd) -typedef struct SRP_VBASE_st - { - STACK_OF(SRP_user_pwd) *users_pwd; - STACK_OF(SRP_gN_cache) *gN_cache; +typedef struct SRP_VBASE_st { + STACK_OF(SRP_user_pwd) *users_pwd; + STACK_OF(SRP_gN_cache) *gN_cache; /* to simulate a user */ - char *seed_key; - BIGNUM *default_g; - BIGNUM *default_N; - } SRP_VBASE; + char *seed_key; + BIGNUM *default_g; + BIGNUM *default_N; +} SRP_VBASE; - -/*Structure interne pour retenir les couples N et g*/ -typedef struct SRP_gN_st - { - char *id; - BIGNUM *g; - BIGNUM *N; - } SRP_gN; +/* + * Structure interne pour retenir les couples N et g + */ +typedef struct SRP_gN_st { + char *id; + BIGNUM *g; + BIGNUM *N; +} SRP_gN; DECLARE_STACK_OF(SRP_gN) SRP_VBASE *SRP_VBASE_new(char *seed_key); int SRP_VBASE_free(SRP_VBASE *vb); -int SRP_VBASE_init(SRP_VBASE *vb, char * verifier_file); +int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file); SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username); char *SRP_create_verifier(const char *user, const char *pass, char **salt, - char **verifier, const char *N, const char *g); -int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, BIGNUM **verifier, const BIGNUM *N, const BIGNUM *g); - - -#define SRP_NO_ERROR 0 -#define SRP_ERR_VBASE_INCOMPLETE_FILE 1 -#define SRP_ERR_VBASE_BN_LIB 2 -#define SRP_ERR_OPEN_FILE 3 -#define SRP_ERR_MEMORY 4 - -#define DB_srptype 0 -#define DB_srpverifier 1 -#define DB_srpsalt 2 -#define DB_srpid 3 -#define DB_srpgN 4 -#define DB_srpinfo 5 -#undef DB_NUMBER -#define DB_NUMBER 6 - -#define DB_SRP_INDEX 'I' -#define DB_SRP_VALID 'V' -#define DB_SRP_REVOKED 'R' -#define DB_SRP_MODIF 'v' - + char **verifier, const char *N, const char *g); +int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, + BIGNUM **verifier, const BIGNUM *N, + const BIGNUM *g); + +# define SRP_NO_ERROR 0 +# define SRP_ERR_VBASE_INCOMPLETE_FILE 1 +# define SRP_ERR_VBASE_BN_LIB 2 +# define SRP_ERR_OPEN_FILE 3 +# define SRP_ERR_MEMORY 4 + +# define DB_srptype 0 +# define DB_srpverifier 1 +# define DB_srpsalt 2 +# define DB_srpid 3 +# define DB_srpgN 4 +# define DB_srpinfo 5 +# undef DB_NUMBER +# define DB_NUMBER 6 + +# define DB_SRP_INDEX 'I' +# define DB_SRP_VALID 'V' +# define DB_SRP_REVOKED 'R' +# define DB_SRP_MODIF 'v' /* see srp.c */ -char * SRP_check_known_gN_param(BIGNUM* g, BIGNUM* N); -SRP_gN *SRP_get_default_gN(const char * id) ; +char *SRP_check_known_gN_param(BIGNUM *g, BIGNUM *N); +SRP_gN *SRP_get_default_gN(const char *id); /* server side .... */ -BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, BIGNUM *N); +BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, + BIGNUM *N); BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v); int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N); -BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N) ; - - +BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N); /* client side .... */ BIGNUM *SRP_Calc_x(BIGNUM *s, const char *user, const char *pass); BIGNUM *SRP_Calc_A(BIGNUM *a, BIGNUM *N, BIGNUM *g); -BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, BIGNUM *a, BIGNUM *u); +BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, + BIGNUM *a, BIGNUM *u); int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N); -#define SRP_MINIMAL_N 1024 +# define SRP_MINIMAL_N 1024 #ifdef __cplusplus } #endif -#endif +# endif #endif diff --git a/crypto/srp/srp_lcl.h b/crypto/srp/srp_lcl.h index 42bda3f148..9a7fce1b4c 100644 --- a/crypto/srp/srp_lcl.h +++ b/crypto/srp/srp_lcl.h @@ -1,6 +1,7 @@ /* crypto/srp/srp_lcl.h */ -/* Written by Peter Sylvester (peter.sylvester@edelweb.fr) - * for the EdelKey project and contributed to the OpenSSL project 2004. +/* + * Written by Peter Sylvester (peter.sylvester@edelweb.fr) for the EdelKey + * project and contributed to the OpenSSL project 2004. */ /* ==================================================================== * Copyright (c) 2004 The OpenSSL Project. All rights reserved. @@ -10,7 +11,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -56,17 +57,17 @@ * */ #ifndef HEADER_SRP_LCL_H -#define HEADER_SRP_LCL_H +# define HEADER_SRP_LCL_H -#include <openssl/srp.h> -#include <openssl/sha.h> +# include <openssl/srp.h> +# include <openssl/sha.h> -#if 0 -#define srp_bn_print(a) {fprintf(stderr, #a "="); BN_print_fp(stderr,a); \ +# if 0 +# define srp_bn_print(a) {fprintf(stderr, #a "="); BN_print_fp(stderr,a); \ fprintf(stderr,"\n");} -#else -#define srp_bn_print(a) -#endif +# else +# define srp_bn_print(a) +# endif diff --git a/crypto/srp/srp_lib.c b/crypto/srp/srp_lib.c index 71492f3cef..6997a28957 100644 --- a/crypto/srp/srp_lib.c +++ b/crypto/srp/srp_lib.c @@ -1,7 +1,8 @@ /* crypto/srp/srp_lib.c */ -/* Written by Christophe Renou (christophe.renou@edelweb.fr) with - * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr) - * for the EdelKey project and contributed to the OpenSSL project 2004. +/* + * Written by Christophe Renou (christophe.renou@edelweb.fr) with the + * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the + * EdelKey project and contributed to the OpenSSL project 2004. */ /* ==================================================================== * Copyright (c) 2004 The OpenSSL Project. All rights reserved. @@ -11,7 +12,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -57,295 +58,285 @@ * */ #ifndef OPENSSL_NO_SRP -#include "cryptlib.h" -#include "srp_lcl.h" -#include <openssl/srp.h> -#include <openssl/evp.h> -#include "internal/bn_srp.h" +# include "cryptlib.h" +# include "srp_lcl.h" +# include <openssl/srp.h> +# include <openssl/evp.h> +# include "internal/bn_srp.h" static BIGNUM *srp_Calc_k(BIGNUM *N, BIGNUM *g) - { - /* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */ - - unsigned char digest[SHA_DIGEST_LENGTH]; - unsigned char *tmp; - EVP_MD_CTX ctxt; - int longg ; - int longN = BN_num_bytes(N); - - if (BN_ucmp(g, N) >= 0) - return NULL; - - if ((tmp = OPENSSL_malloc(longN)) == NULL) - return NULL; - BN_bn2bin(N,tmp) ; - - EVP_MD_CTX_init(&ctxt); - EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); - EVP_DigestUpdate(&ctxt, tmp, longN); - - memset(tmp, 0, longN); - longg = BN_bn2bin(g,tmp) ; - /* use the zeros behind to pad on left */ - EVP_DigestUpdate(&ctxt, tmp + longg, longN-longg); - EVP_DigestUpdate(&ctxt, tmp, longg); - OPENSSL_free(tmp); - - EVP_DigestFinal_ex(&ctxt, digest, NULL); - EVP_MD_CTX_cleanup(&ctxt); - return BN_bin2bn(digest, sizeof(digest), NULL); - } +{ + /* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */ + + unsigned char digest[SHA_DIGEST_LENGTH]; + unsigned char *tmp; + EVP_MD_CTX ctxt; + int longg; + int longN = BN_num_bytes(N); + + if (BN_ucmp(g, N) >= 0) + return NULL; + + if ((tmp = OPENSSL_malloc(longN)) == NULL) + return NULL; + BN_bn2bin(N, tmp); + + EVP_MD_CTX_init(&ctxt); + EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); + EVP_DigestUpdate(&ctxt, tmp, longN); + + memset(tmp, 0, longN); + longg = BN_bn2bin(g, tmp); + /* use the zeros behind to pad on left */ + EVP_DigestUpdate(&ctxt, tmp + longg, longN - longg); + EVP_DigestUpdate(&ctxt, tmp, longg); + OPENSSL_free(tmp); + + EVP_DigestFinal_ex(&ctxt, digest, NULL); + EVP_MD_CTX_cleanup(&ctxt); + return BN_bin2bn(digest, sizeof(digest), NULL); +} BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N) - { - /* k = SHA1(PAD(A) || PAD(B) ) -- tls-srp draft 8 */ - - BIGNUM *u; - unsigned char cu[SHA_DIGEST_LENGTH]; - unsigned char *cAB; - EVP_MD_CTX ctxt; - int longN; - if ((A == NULL) ||(B == NULL) || (N == NULL)) - return NULL; - - if (BN_ucmp(A, N) >= 0 || BN_ucmp(B, N) >= 0) - return NULL; - - longN= BN_num_bytes(N); - - if ((cAB = OPENSSL_malloc(2*longN)) == NULL) - return NULL; - - memset(cAB, 0, longN); - - EVP_MD_CTX_init(&ctxt); - EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); - EVP_DigestUpdate(&ctxt, cAB + BN_bn2bin(A,cAB+longN), longN); - EVP_DigestUpdate(&ctxt, cAB + BN_bn2bin(B,cAB+longN), longN); - OPENSSL_free(cAB); - EVP_DigestFinal_ex(&ctxt, cu, NULL); - EVP_MD_CTX_cleanup(&ctxt); - - if (!(u = BN_bin2bn(cu, sizeof(cu), NULL))) - return NULL; - if (!BN_is_zero(u)) - return u; - BN_free(u); - return NULL; +{ + /* k = SHA1(PAD(A) || PAD(B) ) -- tls-srp draft 8 */ + + BIGNUM *u; + unsigned char cu[SHA_DIGEST_LENGTH]; + unsigned char *cAB; + EVP_MD_CTX ctxt; + int longN; + if ((A == NULL) || (B == NULL) || (N == NULL)) + return NULL; + + if (BN_ucmp(A, N) >= 0 || BN_ucmp(B, N) >= 0) + return NULL; + + longN = BN_num_bytes(N); + + if ((cAB = OPENSSL_malloc(2 * longN)) == NULL) + return NULL; + + memset(cAB, 0, longN); + + EVP_MD_CTX_init(&ctxt); + EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); + EVP_DigestUpdate(&ctxt, cAB + BN_bn2bin(A, cAB + longN), longN); + EVP_DigestUpdate(&ctxt, cAB + BN_bn2bin(B, cAB + longN), longN); + OPENSSL_free(cAB); + EVP_DigestFinal_ex(&ctxt, cu, NULL); + EVP_MD_CTX_cleanup(&ctxt); + + if (!(u = BN_bin2bn(cu, sizeof(cu), NULL))) + return NULL; + if (!BN_is_zero(u)) + return u; + BN_free(u); + return NULL; } -BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, BIGNUM *N) - { - BIGNUM *tmp = NULL, *S = NULL; - BN_CTX *bn_ctx; - - if (u == NULL || A == NULL || v == NULL || b == NULL || N == NULL) - return NULL; - - if ((bn_ctx = BN_CTX_new()) == NULL || - (tmp = BN_new()) == NULL || - (S = BN_new()) == NULL ) - goto err; - - /* S = (A*v**u) ** b */ - - if (!BN_mod_exp(tmp,v,u,N,bn_ctx)) - goto err; - if (!BN_mod_mul(tmp,A,tmp,N,bn_ctx)) - goto err; - if (!BN_mod_exp(S,tmp,b,N,bn_ctx)) - goto err; -err: - BN_CTX_free(bn_ctx); - BN_clear_free(tmp); - return S; - } +BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, + BIGNUM *N) +{ + BIGNUM *tmp = NULL, *S = NULL; + BN_CTX *bn_ctx; + + if (u == NULL || A == NULL || v == NULL || b == NULL || N == NULL) + return NULL; + + if ((bn_ctx = BN_CTX_new()) == NULL || + (tmp = BN_new()) == NULL || (S = BN_new()) == NULL) + goto err; + + /* S = (A*v**u) ** b */ + + if (!BN_mod_exp(tmp, v, u, N, bn_ctx)) + goto err; + if (!BN_mod_mul(tmp, A, tmp, N, bn_ctx)) + goto err; + if (!BN_mod_exp(S, tmp, b, N, bn_ctx)) + goto err; + err: + BN_CTX_free(bn_ctx); + BN_clear_free(tmp); + return S; +} BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v) - { - BIGNUM *kv = NULL, *gb = NULL; - BIGNUM *B = NULL, *k = NULL; - BN_CTX *bn_ctx; - - if (b == NULL || N == NULL || g == NULL || v == NULL || - (bn_ctx = BN_CTX_new()) == NULL) - return NULL; - - if ( (kv = BN_new()) == NULL || - (gb = BN_new()) == NULL || - (B = BN_new())== NULL) - goto err; - - /* B = g**b + k*v */ - - if (!BN_mod_exp(gb,g,b,N,bn_ctx) || - !(k = srp_Calc_k(N,g)) || - !BN_mod_mul(kv,v,k,N,bn_ctx) || - !BN_mod_add(B,gb,kv,N,bn_ctx)) - { - BN_free(B); - B = NULL; - } -err: - BN_CTX_free(bn_ctx); - BN_clear_free(kv); - BN_clear_free(gb); - BN_free(k); - return B; - } +{ + BIGNUM *kv = NULL, *gb = NULL; + BIGNUM *B = NULL, *k = NULL; + BN_CTX *bn_ctx; + + if (b == NULL || N == NULL || g == NULL || v == NULL || + (bn_ctx = BN_CTX_new()) == NULL) + return NULL; + + if ((kv = BN_new()) == NULL || + (gb = BN_new()) == NULL || (B = BN_new()) == NULL) + goto err; + + /* B = g**b + k*v */ + + if (!BN_mod_exp(gb, g, b, N, bn_ctx) || + !(k = srp_Calc_k(N, g)) || + !BN_mod_mul(kv, v, k, N, bn_ctx) || + !BN_mod_add(B, gb, kv, N, bn_ctx)) { + BN_free(B); + B = NULL; + } + err: + BN_CTX_free(bn_ctx); + BN_clear_free(kv); + BN_clear_free(gb); + BN_free(k); + return B; +} BIGNUM *SRP_Calc_x(BIGNUM *s, const char *user, const char *pass) - { - unsigned char dig[SHA_DIGEST_LENGTH]; - EVP_MD_CTX ctxt; - unsigned char *cs; - - if ((s == NULL) || - (user == NULL) || - (pass == NULL)) - return NULL; - - if ((cs = OPENSSL_malloc(BN_num_bytes(s))) == NULL) - return NULL; - - EVP_MD_CTX_init(&ctxt); - EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); - EVP_DigestUpdate(&ctxt, user, strlen(user)); - EVP_DigestUpdate(&ctxt, ":", 1); - EVP_DigestUpdate(&ctxt, pass, strlen(pass)); - EVP_DigestFinal_ex(&ctxt, dig, NULL); - - EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); - BN_bn2bin(s,cs); - EVP_DigestUpdate(&ctxt, cs, BN_num_bytes(s)); - OPENSSL_free(cs); - EVP_DigestUpdate(&ctxt, dig, sizeof(dig)); - EVP_DigestFinal_ex(&ctxt, dig, NULL); - EVP_MD_CTX_cleanup(&ctxt); - - return BN_bin2bn(dig, sizeof(dig), NULL); - } +{ + unsigned char dig[SHA_DIGEST_LENGTH]; + EVP_MD_CTX ctxt; + unsigned char *cs; + + if ((s == NULL) || (user == NULL) || (pass == NULL)) + return NULL; + + if ((cs = OPENSSL_malloc(BN_num_bytes(s))) == NULL) + return NULL; + + EVP_MD_CTX_init(&ctxt); + EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); + EVP_DigestUpdate(&ctxt, user, strlen(user)); + EVP_DigestUpdate(&ctxt, ":", 1); + EVP_DigestUpdate(&ctxt, pass, strlen(pass)); + EVP_DigestFinal_ex(&ctxt, dig, NULL); + + EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); + BN_bn2bin(s, cs); + EVP_DigestUpdate(&ctxt, cs, BN_num_bytes(s)); + OPENSSL_free(cs); + EVP_DigestUpdate(&ctxt, dig, sizeof(dig)); + EVP_DigestFinal_ex(&ctxt, dig, NULL); + EVP_MD_CTX_cleanup(&ctxt); + + return BN_bin2bn(dig, sizeof(dig), NULL); +} BIGNUM *SRP_Calc_A(BIGNUM *a, BIGNUM *N, BIGNUM *g) - { - BN_CTX *bn_ctx; - BIGNUM * A = NULL; - - if (a == NULL || N == NULL || g == NULL || - (bn_ctx = BN_CTX_new()) == NULL) - return NULL; - - if ((A = BN_new()) != NULL && - !BN_mod_exp(A,g,a,N,bn_ctx)) - { - BN_free(A); - A = NULL; - } - BN_CTX_free(bn_ctx); - return A; - } - - -BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, BIGNUM *a, BIGNUM *u) - { - BIGNUM *tmp = NULL, *tmp2 = NULL, *tmp3 = NULL , *k = NULL, *K = NULL; - BN_CTX *bn_ctx; - - if (u == NULL || B == NULL || N == NULL || g == NULL || x == NULL || a == NULL || - (bn_ctx = BN_CTX_new()) == NULL) - return NULL; - - if ((tmp = BN_new()) == NULL || - (tmp2 = BN_new())== NULL || - (tmp3 = BN_new())== NULL || - (K = BN_new()) == NULL) - goto err; - - if (!BN_mod_exp(tmp,g,x,N,bn_ctx)) - goto err; - if (!(k = srp_Calc_k(N,g))) - goto err; - if (!BN_mod_mul(tmp2,tmp,k,N,bn_ctx)) - goto err; - if (!BN_mod_sub(tmp,B,tmp2,N,bn_ctx)) - goto err; - - if (!BN_mod_mul(tmp3,u,x,N,bn_ctx)) - goto err; - if (!BN_mod_add(tmp2,a,tmp3,N,bn_ctx)) - goto err; - if (!BN_mod_exp(K,tmp,tmp2,N,bn_ctx)) - goto err; - -err : - BN_CTX_free(bn_ctx); - BN_clear_free(tmp); - BN_clear_free(tmp2); - BN_clear_free(tmp3); - BN_free(k); - return K; - } +{ + BN_CTX *bn_ctx; + BIGNUM *A = NULL; + + if (a == NULL || N == NULL || g == NULL || + (bn_ctx = BN_CTX_new()) == NULL) + return NULL; + + if ((A = BN_new()) != NULL && !BN_mod_exp(A, g, a, N, bn_ctx)) { + BN_free(A); + A = NULL; + } + BN_CTX_free(bn_ctx); + return A; +} + +BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, + BIGNUM *a, BIGNUM *u) +{ + BIGNUM *tmp = NULL, *tmp2 = NULL, *tmp3 = NULL, *k = NULL, *K = NULL; + BN_CTX *bn_ctx; + + if (u == NULL || B == NULL || N == NULL || g == NULL || x == NULL + || a == NULL || (bn_ctx = BN_CTX_new()) == NULL) + return NULL; + + if ((tmp = BN_new()) == NULL || + (tmp2 = BN_new()) == NULL || + (tmp3 = BN_new()) == NULL || (K = BN_new()) == NULL) + goto err; + + if (!BN_mod_exp(tmp, g, x, N, bn_ctx)) + goto err; + if (!(k = srp_Calc_k(N, g))) + goto err; + if (!BN_mod_mul(tmp2, tmp, k, N, bn_ctx)) + goto err; + if (!BN_mod_sub(tmp, B, tmp2, N, bn_ctx)) + goto err; + + if (!BN_mod_mul(tmp3, u, x, N, bn_ctx)) + goto err; + if (!BN_mod_add(tmp2, a, tmp3, N, bn_ctx)) + goto err; + if (!BN_mod_exp(K, tmp, tmp2, N, bn_ctx)) + goto err; + + err: + BN_CTX_free(bn_ctx); + BN_clear_free(tmp); + BN_clear_free(tmp2); + BN_clear_free(tmp3); + BN_free(k); + return K; +} int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N) - { - BIGNUM *r; - BN_CTX *bn_ctx; - int ret = 0; - - if (B == NULL || N == NULL || - (bn_ctx = BN_CTX_new()) == NULL) - return 0; - - if ((r = BN_new()) == NULL) - goto err; - /* Checks if B % N == 0 */ - if (!BN_nnmod(r,B,N,bn_ctx)) - goto err; - ret = !BN_is_zero(r); -err: - BN_CTX_free(bn_ctx); - BN_free(r); - return ret; - } +{ + BIGNUM *r; + BN_CTX *bn_ctx; + int ret = 0; + + if (B == NULL || N == NULL || (bn_ctx = BN_CTX_new()) == NULL) + return 0; + + if ((r = BN_new()) == NULL) + goto err; + /* Checks if B % N == 0 */ + if (!BN_nnmod(r, B, N, bn_ctx)) + goto err; + ret = !BN_is_zero(r); + err: + BN_CTX_free(bn_ctx); + BN_free(r); + return ret; +} int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N) - { - /* Checks if A % N == 0 */ - return SRP_Verify_B_mod_N(A,N) ; - } - - -/* Check if G and N are kwown parameters. - The values have been generated from the ietf-tls-srp draft version 8 -*/ -char * SRP_check_known_gN_param(BIGNUM* g, BIGNUM* N) - { - size_t i; - if ((g == NULL) || (N == NULL)) - return 0; - - srp_bn_print(g); - srp_bn_print(N); - - for(i = 0; i < KNOWN_GN_NUMBER; i++) - { - if (BN_cmp(knowngN[i].g, g) == 0 && BN_cmp(knowngN[i].N, N) == 0) - return knowngN[i].id; - } - return NULL; - } +{ + /* Checks if A % N == 0 */ + return SRP_Verify_B_mod_N(A, N); +} + +/* + * Check if G and N are kwown parameters. The values have been generated + * from the ietf-tls-srp draft version 8 + */ +char *SRP_check_known_gN_param(BIGNUM *g, BIGNUM *N) +{ + size_t i; + if ((g == NULL) || (N == NULL)) + return 0; + + srp_bn_print(g); + srp_bn_print(N); + + for (i = 0; i < KNOWN_GN_NUMBER; i++) { + if (BN_cmp(knowngN[i].g, g) == 0 && BN_cmp(knowngN[i].N, N) == 0) + return knowngN[i].id; + } + return NULL; +} SRP_gN *SRP_get_default_gN(const char *id) - { - size_t i; - - if (id == NULL) - return knowngN; - for(i = 0; i < KNOWN_GN_NUMBER; i++) - { - if (strcmp(knowngN[i].id, id)==0) - return knowngN + i; - } - return NULL; - } +{ + size_t i; + + if (id == NULL) + return knowngN; + for (i = 0; i < KNOWN_GN_NUMBER; i++) { + if (strcmp(knowngN[i].id, id) == 0) + return knowngN + i; + } + return NULL; +} #endif diff --git a/crypto/srp/srp_vfy.c b/crypto/srp/srp_vfy.c index eda79bce54..df82ca3830 100644 --- a/crypto/srp/srp_vfy.c +++ b/crypto/srp/srp_vfy.c @@ -1,7 +1,8 @@ /* crypto/srp/srp_vfy.c */ -/* Written by Christophe Renou (christophe.renou@edelweb.fr) with - * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr) - * for the EdelKey project and contributed to the OpenSSL project 2004. +/* + * Written by Christophe Renou (christophe.renou@edelweb.fr) with the + * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the + * EdelKey project and contributed to the OpenSSL project 2004. */ /* ==================================================================== * Copyright (c) 2004 The OpenSSL Project. All rights reserved. @@ -11,7 +12,7 @@ * are met: * * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. + * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in @@ -57,607 +58,584 @@ * */ #ifndef OPENSSL_NO_SRP -#include "cryptlib.h" -#include "srp_lcl.h" -#include <openssl/srp.h> -#include <openssl/evp.h> -#include <openssl/buffer.h> -#include <openssl/rand.h> -#include <openssl/txt_db.h> +# include "cryptlib.h" +# include "srp_lcl.h" +# include <openssl/srp.h> +# include <openssl/evp.h> +# include <openssl/buffer.h> +# include <openssl/rand.h> +# include <openssl/txt_db.h> -#define SRP_RANDOM_SALT_LEN 20 -#define MAX_LEN 2500 +# define SRP_RANDOM_SALT_LEN 20 +# define MAX_LEN 2500 static char b64table[] = - "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz./"; + "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz./"; -/* the following two conversion routines have been inspired by code from Stanford */ +/* + * the following two conversion routines have been inspired by code from + * Stanford + */ /* * Convert a base64 string into raw byte array representation. */ static int t_fromb64(unsigned char *a, const char *src) - { - char *loc; - int i, j; - int size; - - while(*src && (*src == ' ' || *src == '\t' || *src == '\n')) - ++src; - size = strlen(src); - i = 0; - while(i < size) - { - loc = strchr(b64table, src[i]); - if(loc == (char *) 0) break; - else a[i] = loc - b64table; - ++i; - } - /* if nothing valid to process we have a zero length response */ - if (i == 0) - return 0; - size = i; - i = size - 1; - j = size; - while(1) - { - a[j] = a[i]; - if(--i < 0) break; - a[j] |= (a[i] & 3) << 6; - --j; - a[j] = (unsigned char) ((a[i] & 0x3c) >> 2); - if(--i < 0) break; - a[j] |= (a[i] & 0xf) << 4; - --j; - a[j] = (unsigned char) ((a[i] & 0x30) >> 4); - if(--i < 0) break; - a[j] |= (a[i] << 2); - - a[--j] = 0; - if(--i < 0) break; - } - while(a[j] == 0 && j <= size) ++j; - i = 0; - while (j <= size) a[i++] = a[j++]; - return i; - } - +{ + char *loc; + int i, j; + int size; + + while (*src && (*src == ' ' || *src == '\t' || *src == '\n')) + ++src; + size = strlen(src); + i = 0; + while (i < size) { + loc = strchr(b64table, src[i]); + if (loc == (char *)0) + break; + else + a[i] = loc - b64table; + ++i; + } + /* if nothing valid to process we have a zero length response */ + if (i == 0) + return 0; + size = i; + i = size - 1; + j = size; + while (1) { + a[j] = a[i]; + if (--i < 0) + break; + a[j] |= (a[i] & 3) << 6; + --j; + a[j] = (unsigned char)((a[i] & 0x3c) >> 2); + if (--i < 0) + break; + a[j] |= (a[i] & 0xf) << 4; + --j; + a[j] = (unsigned char)((a[i] & 0x30) >> 4); + if (--i < 0) + break; + a[j] |= (a[i] << 2); + + a[--j] = 0; + if (--i < 0) + break; + } + while (a[j] == 0 && j <= size) + ++j; + i = 0; + while (j <= size) + a[i++] = a[j++]; + return i; +} /* * Convert a raw byte string into a null-terminated base64 ASCII string. */ static char *t_tob64(char *dst, const unsigned char *src, int size) - { - int c, pos = size % 3; - unsigned char b0 = 0, b1 = 0, b2 = 0, notleading = 0; - char *olddst = dst; - - switch(pos) - { - case 1: - b2 = src[0]; - break; - case 2: - b1 = src[0]; - b2 = src[1]; - break; - } - - while(1) - { - c = (b0 & 0xfc) >> 2; - if(notleading || c != 0) - { - *dst++ = b64table[c]; - notleading = 1; - } - c = ((b0 & 3) << 4) | ((b1 & 0xf0) >> 4); - if(notleading || c != 0) - { - *dst++ = b64table[c]; - notleading = 1; - } - c = ((b1 & 0xf) << 2) | ((b2 & 0xc0) >> 6); - if(notleading || c != 0) - { - *dst++ = b64table[c]; - notleading = 1; - } - c = b2 & 0x3f; - if(notleading || c != 0) - { - *dst++ = b64table[c]; - notleading = 1; - } - if(pos >= size) break; - else - { - b0 = src[pos++]; - b1 = src[pos++]; - b2 = src[pos++]; - } - } - - *dst++ = '\0'; - return olddst; - } +{ + int c, pos = size % 3; + unsigned char b0 = 0, b1 = 0, b2 = 0, notleading = 0; + char *olddst = dst; + + switch (pos) { + case 1: + b2 = src[0]; + break; + case 2: + b1 = src[0]; + b2 = src[1]; + break; + } + + while (1) { + c = (b0 & 0xfc) >> 2; + if (notleading || c != 0) { + *dst++ = b64table[c]; + notleading = 1; + } + c = ((b0 & 3) << 4) | ((b1 & 0xf0) >> 4); + if (notleading || c != 0) { + *dst++ = b64table[c]; + notleading = 1; + } + c = ((b1 & 0xf) << 2) | ((b2 & 0xc0) >> 6); + if (notleading || c != 0) { + *dst++ = b64table[c]; + notleading = 1; + } + c = b2 & 0x3f; + if (notleading || c != 0) { + *dst++ = b64table[c]; + notleading = 1; + } + if (pos >= size) + break; + else { + b0 = src[pos++]; + b1 = src[pos++]; + b2 = src[pos++]; + } + } + + *dst++ = '\0'; + return olddst; +} static void SRP_user_pwd_free(SRP_user_pwd *user_pwd) - { - if (user_pwd == NULL) - return; - BN_free(user_pwd->s); - BN_clear_free(user_pwd->v); - OPENSSL_free(user_pwd->id); - OPENSSL_free(user_pwd->info); - OPENSSL_free(user_pwd); - } +{ + if (user_pwd == NULL) + return; + BN_free(user_pwd->s); + BN_clear_free(user_pwd->v); + OPENSSL_free(user_pwd->id); + OPENSSL_free(user_pwd->info); + OPENSSL_free(user_pwd); +} static SRP_user_pwd *SRP_user_pwd_new(void) - { - SRP_user_pwd *ret = OPENSSL_malloc(sizeof(SRP_user_pwd)); - if (ret == NULL) - return NULL; - ret->N = NULL; - ret->g = NULL; - ret->s = NULL; - ret->v = NULL; - ret->id = NULL ; - ret->info = NULL; - return ret; - } +{ + SRP_user_pwd *ret = OPENSSL_malloc(sizeof(SRP_user_pwd)); + if (ret == NULL) + return NULL; + ret->N = NULL; + ret->g = NULL; + ret->s = NULL; + ret->v = NULL; + ret->id = NULL; + ret->info = NULL; + return ret; +} static void SRP_user_pwd_set_gN(SRP_user_pwd *vinfo, const BIGNUM *g, - const BIGNUM *N) - { - vinfo->N = N; - vinfo->g = g; - } + const BIGNUM *N) +{ + vinfo->N = N; + vinfo->g = g; +} static int SRP_user_pwd_set_ids(SRP_user_pwd *vinfo, const char *id, - const char *info) - { - if (id != NULL && NULL == (vinfo->id = BUF_strdup(id))) - return 0; - return (info == NULL || NULL != (vinfo->info = BUF_strdup(info))) ; - } + const char *info) +{ + if (id != NULL && NULL == (vinfo->id = BUF_strdup(id))) + return 0; + return (info == NULL || NULL != (vinfo->info = BUF_strdup(info))); +} static int SRP_user_pwd_set_sv(SRP_user_pwd *vinfo, const char *s, - const char *v) - { - unsigned char tmp[MAX_LEN]; - int len; - - if (strlen(s) > MAX_LEN || strlen(v) > MAX_LEN) - return 0; - len = t_fromb64(tmp, v); - if (NULL == (vinfo->v = BN_bin2bn(tmp, len, NULL)) ) - return 0; - len = t_fromb64(tmp, s); - return ((vinfo->s = BN_bin2bn(tmp, len, NULL)) != NULL) ; - } + const char *v) +{ + unsigned char tmp[MAX_LEN]; + int len; + + if (strlen(s) > MAX_LEN || strlen(v) > MAX_LEN) + return 0; + len = t_fromb64(tmp, v); + if (NULL == (vinfo->v = BN_bin2bn(tmp, len, NULL))) + return 0; + len = t_fromb64(tmp, s); + return ((vinfo->s = BN_bin2bn(tmp, len, NULL)) != NULL); +} static int SRP_user_pwd_set_sv_BN(SRP_user_pwd *vinfo, BIGNUM *s, BIGNUM *v) - { - vinfo->v = v; - vinfo->s = s; - return (vinfo->s != NULL && vinfo->v != NULL) ; - } +{ + vinfo->v = v; + vinfo->s = s; + return (vinfo->s != NULL && vinfo->v != NULL); +} SRP_VBASE *SRP_VBASE_new(char *seed_key) - { - SRP_VBASE *vb = (SRP_VBASE *) OPENSSL_malloc(sizeof(SRP_VBASE)); - - if (vb == NULL) - return NULL; - if (!(vb->users_pwd = sk_SRP_user_pwd_new_null()) || - !(vb->gN_cache = sk_SRP_gN_cache_new_null())) - { - OPENSSL_free(vb); - return NULL; - } - vb->default_g = NULL; - vb->default_N = NULL; - vb->seed_key = NULL; - if ((seed_key != NULL) && - (vb->seed_key = BUF_strdup(seed_key)) == NULL) - { - sk_SRP_user_pwd_free(vb->users_pwd); - sk_SRP_gN_cache_free(vb->gN_cache); - OPENSSL_free(vb); - return NULL; - } - return vb; - } - +{ + SRP_VBASE *vb = (SRP_VBASE *)OPENSSL_malloc(sizeof(SRP_VBASE)); + + if (vb == NULL) + return NULL; + if (!(vb->users_pwd = sk_SRP_user_pwd_new_null()) || + !(vb->gN_cache = sk_SRP_gN_cache_new_null())) { + OPENSSL_free(vb); + return NULL; + } + vb->default_g = NULL; + vb->default_N = NULL; + vb->seed_key = NULL; + if ((seed_key != NULL) && (vb->seed_key = BUF_strdup(seed_key)) == NULL) { + sk_SRP_user_pwd_free(vb->users_pwd); + sk_SRP_gN_cache_free(vb->gN_cache); + OPENSSL_free(vb); + return NULL; + } + return vb; +} int SRP_VBASE_free(SRP_VBASE *vb) - { - sk_SRP_user_pwd_pop_free(vb->users_pwd,SRP_user_pwd_free); - sk_SRP_gN_cache_free(vb->gN_cache); - OPENSSL_free(vb->seed_key); - OPENSSL_free(vb); - return 0; - } - +{ + sk_SRP_user_pwd_pop_free(vb->users_pwd, SRP_user_pwd_free); + sk_SRP_gN_cache_free(vb->gN_cache); + OPENSSL_free(vb->seed_key); + OPENSSL_free(vb); + return 0; +} static SRP_gN_cache *SRP_gN_new_init(const char *ch) - { - unsigned char tmp[MAX_LEN]; - int len; +{ + unsigned char tmp[MAX_LEN]; + int len; - SRP_gN_cache *newgN = (SRP_gN_cache *)OPENSSL_malloc(sizeof(SRP_gN_cache)); - if (newgN == NULL) - return NULL; + SRP_gN_cache *newgN = + (SRP_gN_cache *)OPENSSL_malloc(sizeof(SRP_gN_cache)); + if (newgN == NULL) + return NULL; - if ((newgN->b64_bn = BUF_strdup(ch)) == NULL) - goto err; + if ((newgN->b64_bn = BUF_strdup(ch)) == NULL) + goto err; - len = t_fromb64(tmp, ch); - if ((newgN->bn = BN_bin2bn(tmp, len, NULL))) - return newgN; - - OPENSSL_free(newgN->b64_bn); -err: - OPENSSL_free(newgN); - return NULL; - } + len = t_fromb64(tmp, ch); + if ((newgN->bn = BN_bin2bn(tmp, len, NULL))) + return newgN; + OPENSSL_free(newgN->b64_bn); + err: + OPENSSL_free(newgN); + return NULL; +} static void SRP_gN_free(SRP_gN_cache *gN_cache) - { - if (gN_cache == NULL) - return; - OPENSSL_free(gN_cache->b64_bn); - BN_free(gN_cache->bn); - OPENSSL_free(gN_cache); - } +{ + if (gN_cache == NULL) + return; + OPENSSL_free(gN_cache->b64_bn); + BN_free(gN_cache->bn); + OPENSSL_free(gN_cache); +} static SRP_gN *SRP_get_gN_by_id(const char *id, STACK_OF(SRP_gN) *gN_tab) - { - int i; - - SRP_gN *gN; - if (gN_tab != NULL) - for(i = 0; i < sk_SRP_gN_num(gN_tab); i++) - { - gN = sk_SRP_gN_value(gN_tab, i); - if (gN && (id == NULL || strcmp(gN->id,id)==0)) - return gN; - } - - return SRP_get_default_gN(id); - } +{ + int i; + + SRP_gN *gN; + if (gN_tab != NULL) + for (i = 0; i < sk_SRP_gN_num(gN_tab); i++) { + gN = sk_SRP_gN_value(gN_tab, i); + if (gN && (id == NULL || strcmp(gN->id, id) == 0)) + return gN; + } + + return SRP_get_default_gN(id); +} static BIGNUM *SRP_gN_place_bn(STACK_OF(SRP_gN_cache) *gN_cache, char *ch) - { - int i; - if (gN_cache == NULL) - return NULL; - - /* search if we have already one... */ - for(i = 0; i < sk_SRP_gN_cache_num(gN_cache); i++) - { - SRP_gN_cache *cache = sk_SRP_gN_cache_value(gN_cache, i); - if (strcmp(cache->b64_bn,ch)==0) - return cache->bn; - } - { /* it is the first time that we find it */ - SRP_gN_cache *newgN = SRP_gN_new_init(ch); - if (newgN) - { - if (sk_SRP_gN_cache_insert(gN_cache,newgN,0)>0) - return newgN->bn; - SRP_gN_free(newgN); - } - } - return NULL; - } - -/* this function parses verifier file. Format is: +{ + int i; + if (gN_cache == NULL) + return NULL; + + /* search if we have already one... */ + for (i = 0; i < sk_SRP_gN_cache_num(gN_cache); i++) { + SRP_gN_cache *cache = sk_SRP_gN_cache_value(gN_cache, i); + if (strcmp(cache->b64_bn, ch) == 0) + return cache->bn; + } + { /* it is the first time that we find it */ + SRP_gN_cache *newgN = SRP_gN_new_init(ch); + if (newgN) { + if (sk_SRP_gN_cache_insert(gN_cache, newgN, 0) > 0) + return newgN->bn; + SRP_gN_free(newgN); + } + } + return NULL; +} + +/* + * this function parses verifier file. Format is: * string(index):base64(N):base64(g):0 * string(username):base64(v):base64(salt):int(index) */ - int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file) - { - int error_code ; - STACK_OF(SRP_gN) *SRP_gN_tab = sk_SRP_gN_new_null(); - char *last_index = NULL; - int i; - char **pp; - - SRP_gN *gN = NULL; - SRP_user_pwd *user_pwd = NULL ; - - TXT_DB *tmpdb = NULL; - BIO *in = BIO_new(BIO_s_file()); - - error_code = SRP_ERR_OPEN_FILE; - - if (in == NULL || BIO_read_filename(in,verifier_file) <= 0) - goto err; - - error_code = SRP_ERR_VBASE_INCOMPLETE_FILE; - - if ((tmpdb =TXT_DB_read(in,DB_NUMBER)) == NULL) - goto err; - - error_code = SRP_ERR_MEMORY; - - - if (vb->seed_key) - { - last_index = SRP_get_default_gN(NULL)->id; - } - for (i = 0; i < sk_OPENSSL_PSTRING_num(tmpdb->data); i++) - { - pp = sk_OPENSSL_PSTRING_value(tmpdb->data,i); - if (pp[DB_srptype][0] == DB_SRP_INDEX) - { - /*we add this couple in the internal Stack */ - - if ((gN = (SRP_gN *)OPENSSL_malloc(sizeof(SRP_gN))) == NULL) - goto err; - - if (!(gN->id = BUF_strdup(pp[DB_srpid])) - || !(gN->N = SRP_gN_place_bn(vb->gN_cache,pp[DB_srpverifier])) - || !(gN->g = SRP_gN_place_bn(vb->gN_cache,pp[DB_srpsalt])) - || sk_SRP_gN_insert(SRP_gN_tab,gN,0) == 0) - goto err; - - gN = NULL; - - if (vb->seed_key != NULL) - { - last_index = pp[DB_srpid]; - } - } - else if (pp[DB_srptype][0] == DB_SRP_VALID) - { - /* it is a user .... */ - const SRP_gN *lgN; - - if ((lgN = SRP_get_gN_by_id(pp[DB_srpgN],SRP_gN_tab))!=NULL) - { - error_code = SRP_ERR_MEMORY; - if ((user_pwd = SRP_user_pwd_new()) == NULL) - goto err; - - SRP_user_pwd_set_gN(user_pwd,lgN->g,lgN->N); - if (!SRP_user_pwd_set_ids(user_pwd, pp[DB_srpid],pp[DB_srpinfo])) - goto err; - - error_code = SRP_ERR_VBASE_BN_LIB; - if (!SRP_user_pwd_set_sv(user_pwd, pp[DB_srpsalt],pp[DB_srpverifier])) - goto err; - - if (sk_SRP_user_pwd_insert(vb->users_pwd, user_pwd, 0) == 0) - goto err; - user_pwd = NULL; /* abandon responsability */ - } - } - } - - if (last_index != NULL) - { - /* this means that we want to simulate a default user */ - - if (((gN = SRP_get_gN_by_id(last_index,SRP_gN_tab))==NULL)) - { - error_code = SRP_ERR_VBASE_BN_LIB; - goto err; - } - vb->default_g = gN->g ; - vb->default_N = gN->N ; - gN = NULL ; - } - error_code = SRP_NO_ERROR; +{ + int error_code; + STACK_OF(SRP_gN) *SRP_gN_tab = sk_SRP_gN_new_null(); + char *last_index = NULL; + int i; + char **pp; + + SRP_gN *gN = NULL; + SRP_user_pwd *user_pwd = NULL; + + TXT_DB *tmpdb = NULL; + BIO *in = BIO_new(BIO_s_file()); + + error_code = SRP_ERR_OPEN_FILE; + + if (in == NULL || BIO_read_filename(in, verifier_file) <= 0) + goto err; + + error_code = SRP_ERR_VBASE_INCOMPLETE_FILE; + + if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL) + goto err; + + error_code = SRP_ERR_MEMORY; + + if (vb->seed_key) { + last_index = SRP_get_default_gN(NULL)->id; + } + for (i = 0; i < sk_OPENSSL_PSTRING_num(tmpdb->data); i++) { + pp = sk_OPENSSL_PSTRING_value(tmpdb->data, i); + if (pp[DB_srptype][0] == DB_SRP_INDEX) { + /* + * we add this couple in the internal Stack + */ + + if ((gN = (SRP_gN *) OPENSSL_malloc(sizeof(SRP_gN))) == NULL) + goto err; + + if (!(gN->id = BUF_strdup(pp[DB_srpid])) + || !(gN->N = + SRP_gN_place_bn(vb->gN_cache, pp[DB_srpverifier])) + || !(gN->g = SRP_gN_place_bn(vb->gN_cache, pp[DB_srpsalt])) + || sk_SRP_gN_insert(SRP_gN_tab, gN, 0) == 0) + goto err; + + gN = NULL; + + if (vb->seed_key != NULL) { + last_index = pp[DB_srpid]; + } + } else if (pp[DB_srptype][0] == DB_SRP_VALID) { + /* it is a user .... */ + const SRP_gN *lgN; + + if ((lgN = SRP_get_gN_by_id(pp[DB_srpgN], SRP_gN_tab)) != NULL) { + error_code = SRP_ERR_MEMORY; + if ((user_pwd = SRP_user_pwd_new()) == NULL) + goto err; + + SRP_user_pwd_set_gN(user_pwd, lgN->g, lgN->N); + if (!SRP_user_pwd_set_ids + (user_pwd, pp[DB_srpid], pp[DB_srpinfo])) + goto err; + + error_code = SRP_ERR_VBASE_BN_LIB; + if (!SRP_user_pwd_set_sv + (user_pwd, pp[DB_srpsalt], pp[DB_srpverifier])) + goto err; + + if (sk_SRP_user_pwd_insert(vb->users_pwd, user_pwd, 0) == 0) + goto err; + user_pwd = NULL; /* abandon responsability */ + } + } + } + + if (last_index != NULL) { + /* this means that we want to simulate a default user */ + + if (((gN = SRP_get_gN_by_id(last_index, SRP_gN_tab)) == NULL)) { + error_code = SRP_ERR_VBASE_BN_LIB; + goto err; + } + vb->default_g = gN->g; + vb->default_N = gN->N; + gN = NULL; + } + error_code = SRP_NO_ERROR; err: - /* there may be still some leaks to fix, if this fails, the application terminates most likely */ - - if (gN != NULL) - { - OPENSSL_free(gN->id); - OPENSSL_free(gN); - } + /* + * there may be still some leaks to fix, if this fails, the application + * terminates most likely + */ - SRP_user_pwd_free(user_pwd); + if (gN != NULL) { + OPENSSL_free(gN->id); + OPENSSL_free(gN); + } - if (tmpdb) TXT_DB_free(tmpdb); - if (in) BIO_free_all(in); + SRP_user_pwd_free(user_pwd); - sk_SRP_gN_free(SRP_gN_tab); + if (tmpdb) + TXT_DB_free(tmpdb); + if (in) + BIO_free_all(in); - return error_code; + sk_SRP_gN_free(SRP_gN_tab); - } + return error_code; +} SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username) - { - int i; - SRP_user_pwd *user; - unsigned char digv[SHA_DIGEST_LENGTH]; - unsigned char digs[SHA_DIGEST_LENGTH]; - EVP_MD_CTX ctxt; - - if (vb == NULL) - return NULL; - for(i = 0; i < sk_SRP_user_pwd_num(vb->users_pwd); i++) - { - user = sk_SRP_user_pwd_value(vb->users_pwd, i); - if (strcmp(user->id,username)==0) - return user; - } - if ((vb->seed_key == NULL) || - (vb->default_g == NULL) || - (vb->default_N == NULL)) - return NULL; +{ + int i; + SRP_user_pwd *user; + unsigned char digv[SHA_DIGEST_LENGTH]; + unsigned char digs[SHA_DIGEST_LENGTH]; + EVP_MD_CTX ctxt; + + if (vb == NULL) + return NULL; + for (i = 0; i < sk_SRP_user_pwd_num(vb->users_pwd); i++) { + user = sk_SRP_user_pwd_value(vb->users_pwd, i); + if (strcmp(user->id, username) == 0) + return user; + } + if ((vb->seed_key == NULL) || + (vb->default_g == NULL) || (vb->default_N == NULL)) + return NULL; /* if the user is unknown we set parameters as well if we have a seed_key */ - if ((user = SRP_user_pwd_new()) == NULL) - return NULL; - - SRP_user_pwd_set_gN(user,vb->default_g,vb->default_N); - - if (!SRP_user_pwd_set_ids(user,username,NULL)) - goto err; - - RAND_pseudo_bytes(digv, SHA_DIGEST_LENGTH); - EVP_MD_CTX_init(&ctxt); - EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); - EVP_DigestUpdate(&ctxt, vb->seed_key, strlen(vb->seed_key)); - EVP_DigestUpdate(&ctxt, username, strlen(username)); - EVP_DigestFinal_ex(&ctxt, digs, NULL); - EVP_MD_CTX_cleanup(&ctxt); - if (SRP_user_pwd_set_sv_BN(user, BN_bin2bn(digs,SHA_DIGEST_LENGTH,NULL), BN_bin2bn(digv,SHA_DIGEST_LENGTH, NULL))) - return user; - -err: SRP_user_pwd_free(user); - return NULL; - } + if ((user = SRP_user_pwd_new()) == NULL) + return NULL; + + SRP_user_pwd_set_gN(user, vb->default_g, vb->default_N); + if (!SRP_user_pwd_set_ids(user, username, NULL)) + goto err; + + RAND_pseudo_bytes(digv, SHA_DIGEST_LENGTH); + EVP_MD_CTX_init(&ctxt); + EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL); + EVP_DigestUpdate(&ctxt, vb->seed_key, strlen(vb->seed_key)); + EVP_DigestUpdate(&ctxt, username, strlen(username)); + EVP_DigestFinal_ex(&ctxt, digs, NULL); + EVP_MD_CTX_cleanup(&ctxt); + if (SRP_user_pwd_set_sv_BN + (user, BN_bin2bn(digs, SHA_DIGEST_LENGTH, NULL), + BN_bin2bn(digv, SHA_DIGEST_LENGTH, NULL))) + return user; + + err:SRP_user_pwd_free(user); + return NULL; +} /* - create a verifier (*salt,*verifier,g and N are in base64) -*/ + * create a verifier (*salt,*verifier,g and N are in base64) + */ char *SRP_create_verifier(const char *user, const char *pass, char **salt, - char **verifier, const char *N, const char *g) - { - int len; - char * result=NULL; - char *vf; - BIGNUM *N_bn = NULL, *g_bn = NULL, *s = NULL, *v = NULL; - unsigned char tmp[MAX_LEN]; - unsigned char tmp2[MAX_LEN]; - char * defgNid = NULL; - - if ((user == NULL)|| - (pass == NULL)|| - (salt == NULL)|| - (verifier == NULL)) - goto err; - - if (N) - { - if (!(len = t_fromb64(tmp, N))) goto err; - N_bn = BN_bin2bn(tmp, len, NULL); - if (!(len = t_fromb64(tmp, g))) goto err; - g_bn = BN_bin2bn(tmp, len, NULL); - defgNid = "*"; - } - else - { - SRP_gN * gN = SRP_get_gN_by_id(g, NULL) ; - if (gN == NULL) - goto err; - N_bn = gN->N; - g_bn = gN->g; - defgNid = gN->id; - } - - if (*salt == NULL) - { - RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN); - - s = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL); - } - else - { - if (!(len = t_fromb64(tmp2, *salt))) - goto err; - s = BN_bin2bn(tmp2, len, NULL); - } - - - if(!SRP_create_verifier_BN(user, pass, &s, &v, N_bn, g_bn)) goto err; - - BN_bn2bin(v,tmp); - if (((vf = OPENSSL_malloc(BN_num_bytes(v)*2)) == NULL)) - goto err; - t_tob64(vf, tmp, BN_num_bytes(v)); - - *verifier = vf; - if (*salt == NULL) - { - char *tmp_salt; - - if ((tmp_salt = OPENSSL_malloc(SRP_RANDOM_SALT_LEN * 2)) == NULL) - { - OPENSSL_free(vf); - goto err; - } - t_tob64(tmp_salt, tmp2, SRP_RANDOM_SALT_LEN); - *salt = tmp_salt; - } - - result=defgNid; - -err: - if(N) - { - BN_free(N_bn); - BN_free(g_bn); - } - return result; - } + char **verifier, const char *N, const char *g) +{ + int len; + char *result = NULL; + char *vf; + BIGNUM *N_bn = NULL, *g_bn = NULL, *s = NULL, *v = NULL; + unsigned char tmp[MAX_LEN]; + unsigned char tmp2[MAX_LEN]; + char *defgNid = NULL; + + if ((user == NULL) || + (pass == NULL) || (salt == NULL) || (verifier == NULL)) + goto err; + + if (N) { + if (!(len = t_fromb64(tmp, N))) + goto err; + N_bn = BN_bin2bn(tmp, len, NULL); + if (!(len = t_fromb64(tmp, g))) + goto err; + g_bn = BN_bin2bn(tmp, len, NULL); + defgNid = "*"; + } else { + SRP_gN *gN = SRP_get_gN_by_id(g, NULL); + if (gN == NULL) + goto err; + N_bn = gN->N; + g_bn = gN->g; + defgNid = gN->id; + } + + if (*salt == NULL) { + RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN); + + s = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL); + } else { + if (!(len = t_fromb64(tmp2, *salt))) + goto err; + s = BN_bin2bn(tmp2, len, NULL); + } + + if (!SRP_create_verifier_BN(user, pass, &s, &v, N_bn, g_bn)) + goto err; + + BN_bn2bin(v, tmp); + if (((vf = OPENSSL_malloc(BN_num_bytes(v) * 2)) == NULL)) + goto err; + t_tob64(vf, tmp, BN_num_bytes(v)); + + *verifier = vf; + if (*salt == NULL) { + char *tmp_salt; + + if ((tmp_salt = OPENSSL_malloc(SRP_RANDOM_SALT_LEN * 2)) == NULL) { + OPENSSL_free(vf); + goto err; + } + t_tob64(tmp_salt, tmp2, SRP_RANDOM_SALT_LEN); + *salt = tmp_salt; + } + + result = defgNid; + + err: + if (N) { + BN_free(N_bn); + BN_free(g_bn); + } + return result; +} /* - create a verifier (*salt,*verifier,g and N are BIGNUMs) -*/ + * create a verifier (*salt,*verifier,g and N are BIGNUMs) + */ int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, - BIGNUM **verifier, const BIGNUM *N, const BIGNUM *g) - { - int result=0; - BIGNUM *x = NULL; - BN_CTX *bn_ctx = BN_CTX_new(); - unsigned char tmp2[MAX_LEN]; + BIGNUM **verifier, const BIGNUM *N, + const BIGNUM *g) +{ + int result = 0; + BIGNUM *x = NULL; + BN_CTX *bn_ctx = BN_CTX_new(); + unsigned char tmp2[MAX_LEN]; - if ((user == NULL)|| - (pass == NULL)|| - (salt == NULL)|| - (verifier == NULL)|| - (N == NULL)|| - (g == NULL)|| - (bn_ctx == NULL)) - goto err; + if ((user == NULL) || + (pass == NULL) || + (salt == NULL) || + (verifier == NULL) || (N == NULL) || (g == NULL) || (bn_ctx == NULL)) + goto err; - srp_bn_print(N); - srp_bn_print(g); + srp_bn_print(N); + srp_bn_print(g); - if (*salt == NULL) - { - RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN); + if (*salt == NULL) { + RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN); - *salt = BN_bin2bn(tmp2,SRP_RANDOM_SALT_LEN,NULL); - } + *salt = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL); + } - x = SRP_Calc_x(*salt,user,pass); + x = SRP_Calc_x(*salt, user, pass); - *verifier = BN_new(); - if(*verifier == NULL) goto err; + *verifier = BN_new(); + if (*verifier == NULL) + goto err; - if (!BN_mod_exp(*verifier,g,x,N,bn_ctx)) - { - BN_clear_free(*verifier); - goto err; - } + if (!BN_mod_exp(*verifier, g, x, N, bn_ctx)) { + BN_clear_free(*verifier); + goto err; + } - srp_bn_print(*verifier); + srp_bn_print(*verifier); - result=1; - -err: - - BN_clear_free(x); - BN_CTX_free(bn_ctx); - return result; - } + result = 1; + err: + BN_clear_free(x); + BN_CTX_free(bn_ctx); + return result; +} #endif diff --git a/crypto/srp/srptest.c b/crypto/srp/srptest.c index a2ed0d0f16..17a8256f86 100644 --- a/crypto/srp/srptest.c +++ b/crypto/srp/srptest.c @@ -1,162 +1,154 @@ #include <openssl/opensslconf.h> #ifdef OPENSSL_NO_SRP -#include <stdio.h> +# include <stdio.h> int main(int argc, char *argv[]) - { - printf("No SRP support\n"); - return(0); - } +{ + printf("No SRP support\n"); + return (0); +} #else -#include <openssl/srp.h> -#include <openssl/rand.h> -#include <openssl/err.h> +# include <openssl/srp.h> +# include <openssl/rand.h> +# include <openssl/err.h> static void showbn(const char *name, const BIGNUM *bn) - { - fputs(name, stdout); - fputs(" = ", stdout); - BN_print_fp(stdout, bn); - putc('\n', stdout); - } - -#define RANDOM_SIZE 32 /* use 256 bits on each side */ - -static int run_srp(const char *username, const char *client_pass, const char *server_pass) - { - int ret=-1; - BIGNUM *s = NULL; - BIGNUM *v = NULL; - BIGNUM *a = NULL; - BIGNUM *b = NULL; - BIGNUM *u = NULL; - BIGNUM *x = NULL; - BIGNUM *Apub = NULL; - BIGNUM *Bpub = NULL; - BIGNUM *Kclient = NULL; - BIGNUM *Kserver = NULL; - unsigned char rand_tmp[RANDOM_SIZE]; - /* use builtin 1024-bit params */ - const SRP_gN *GN = SRP_get_default_gN("1024"); - - if(GN == NULL) - { - fprintf(stderr, "Failed to get SRP parameters\n"); - return -1; - } - /* Set up server's password entry */ - if(!SRP_create_verifier_BN(username, server_pass, &s, &v, GN->N, GN->g)) - { - fprintf(stderr, "Failed to create SRP verifier\n"); - return -1; - } - - showbn("N", GN->N); - showbn("g", GN->g); - showbn("Salt", s); - showbn("Verifier", v); - - /* Server random */ - RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp)); - b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL); - /* TODO - check b != 0 */ - showbn("b", b); - - /* Server's first message */ - Bpub = SRP_Calc_B(b, GN->N, GN->g, v); - showbn("B", Bpub); - - if(!SRP_Verify_B_mod_N(Bpub, GN->N)) - { - fprintf(stderr, "Invalid B\n"); - return -1; - } - - /* Client random */ - RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp)); - a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL); - /* TODO - check a != 0 */ - showbn("a", a); - - /* Client's response */ - Apub = SRP_Calc_A(a, GN->N, GN->g); - showbn("A", Apub); - - if(!SRP_Verify_A_mod_N(Apub, GN->N)) - { - fprintf(stderr, "Invalid A\n"); - return -1; - } - - /* Both sides calculate u */ - u = SRP_Calc_u(Apub, Bpub, GN->N); - - /* Client's key */ - x = SRP_Calc_x(s, username, client_pass); - Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u); - showbn("Client's key", Kclient); - - /* Server's key */ - Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N); - showbn("Server's key", Kserver); - - if(BN_cmp(Kclient, Kserver) == 0) - { - ret = 0; - } - else - { - fprintf(stderr, "Keys mismatch\n"); - ret = 1; - } - - BN_clear_free(Kclient); - BN_clear_free(Kserver); - BN_clear_free(x); - BN_free(u); - BN_free(Apub); - BN_clear_free(a); - BN_free(Bpub); - BN_clear_free(b); - BN_free(s); - BN_clear_free(v); - - return ret; - } +{ + fputs(name, stdout); + fputs(" = ", stdout); + BN_print_fp(stdout, bn); + putc('\n', stdout); +} + +# define RANDOM_SIZE 32 /* use 256 bits on each side */ + +static int run_srp(const char *username, const char *client_pass, + const char *server_pass) +{ + int ret = -1; + BIGNUM *s = NULL; + BIGNUM *v = NULL; + BIGNUM *a = NULL; + BIGNUM *b = NULL; + BIGNUM *u = NULL; + BIGNUM *x = NULL; + BIGNUM *Apub = NULL; + BIGNUM *Bpub = NULL; + BIGNUM *Kclient = NULL; + BIGNUM *Kserver = NULL; + unsigned char rand_tmp[RANDOM_SIZE]; + /* use builtin 1024-bit params */ + const SRP_gN *GN = SRP_get_default_gN("1024"); + + if (GN == NULL) { + fprintf(stderr, "Failed to get SRP parameters\n"); + return -1; + } + /* Set up server's password entry */ + if (!SRP_create_verifier_BN(username, server_pass, &s, &v, GN->N, GN->g)) { + fprintf(stderr, "Failed to create SRP verifier\n"); + return -1; + } + + showbn("N", GN->N); + showbn("g", GN->g); + showbn("Salt", s); + showbn("Verifier", v); + + /* Server random */ + RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp)); + b = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL); + /* TODO - check b != 0 */ + showbn("b", b); + + /* Server's first message */ + Bpub = SRP_Calc_B(b, GN->N, GN->g, v); + showbn("B", Bpub); + + if (!SRP_Verify_B_mod_N(Bpub, GN->N)) { + fprintf(stderr, "Invalid B\n"); + return -1; + } + + /* Client random */ + RAND_pseudo_bytes(rand_tmp, sizeof(rand_tmp)); + a = BN_bin2bn(rand_tmp, sizeof(rand_tmp), NULL); + /* TODO - check a != 0 */ + showbn("a", a); + + /* Client's response */ + Apub = SRP_Calc_A(a, GN->N, GN->g); + showbn("A", Apub); + + if (!SRP_Verify_A_mod_N(Apub, GN->N)) { + fprintf(stderr, "Invalid A\n"); + return -1; + } + + /* Both sides calculate u */ + u = SRP_Calc_u(Apub, Bpub, GN->N); + + /* Client's key */ + x = SRP_Calc_x(s, username, client_pass); + Kclient = SRP_Calc_client_key(GN->N, Bpub, GN->g, x, a, u); + showbn("Client's key", Kclient); + + /* Server's key */ + Kserver = SRP_Calc_server_key(Apub, v, u, b, GN->N); + showbn("Server's key", Kserver); + + if (BN_cmp(Kclient, Kserver) == 0) { + ret = 0; + } else { + fprintf(stderr, "Keys mismatch\n"); + ret = 1; + } + + BN_clear_free(Kclient); + BN_clear_free(Kserver); + BN_clear_free(x); + BN_free(u); + BN_free(Apub); + BN_clear_free(a); + BN_free(Bpub); + BN_clear_free(b); + BN_free(s); + BN_clear_free(v); + + return ret; +} int main(int argc, char **argv) - { - BIO *bio_err; - bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); - - CRYPTO_malloc_debug_init(); - CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL); - CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); - - ERR_load_crypto_strings(); - - /* "Negative" test, expect a mismatch */ - if(run_srp("alice", "password1", "password2") == 0) - { - fprintf(stderr, "Mismatched SRP run failed\n"); - return 1; - } - - /* "Positive" test, should pass */ - if(run_srp("alice", "password", "password") != 0) - { - fprintf(stderr, "Plain SRP run failed\n"); - return 1; - } - - CRYPTO_cleanup_all_ex_data(); - ERR_remove_thread_state(NULL); - ERR_free_strings(); - CRYPTO_mem_leaks(bio_err); - - return 0; - } +{ + BIO *bio_err; + bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); + + CRYPTO_malloc_debug_init(); + CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL); + CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); + + ERR_load_crypto_strings(); + + /* "Negative" test, expect a mismatch */ + if (run_srp("alice", "password1", "password2") == 0) { + fprintf(stderr, "Mismatched SRP run failed\n"); + return 1; + } + + /* "Positive" test, should pass */ + if (run_srp("alice", "password", "password") != 0) { + fprintf(stderr, "Plain SRP run failed\n"); + return 1; + } + + CRYPTO_cleanup_all_ex_data(); + ERR_remove_thread_state(NULL); + ERR_free_strings(); + CRYPTO_mem_leaks(bio_err); + + return 0; +} #endif |