* ext/openssl: imported.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@4128 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 515 insertions, 0 deletions

diff --git a/ext/openssl/ossl_pkey_rsa.c b/ext/openssl/ossl_pkey_rsa.c
new file mode 100644
index 0000000000..c3d23666c9
--- /dev/null
+++ b/ext/openssl/ossl_pkey_rsa.c
@@ -0,0 +1,515 @@
+/*
+ * $Id$
+ * 'OpenSSL for Ruby' project
+ * Copyright (C) 2001-2002  Michal Rokos <m.rokos@sh.cvut.cz>
+ * All rights reserved.
+ */
+/*
+ * This program is licenced under the same licence as Ruby.
+ * (See the file 'LICENCE'.)
+ */
+#if !defined(OPENSSL_NO_RSA)
+
+#include "ossl.h"
+
+#define GetPKeyRSA(obj, pkey) do { \
+    GetPKey(obj, pkey); \
+    if (EVP_PKEY_type(pkey->type) != EVP_PKEY_RSA) { /* PARANOIA? */ \
+	ossl_raise(rb_eRuntimeError, "THIS IS NOT A RSA!") ; \
+    } \
+} while (0)
+
+#define RSA_PRIVATE(rsa) ((rsa)->p && (rsa)->q)
+
+/*
+ * Classes
+ */
+VALUE cRSA;
+VALUE eRSAError;
+
+/*
+ * Public
+ */
+static VALUE
+rsa_instance(VALUE klass, RSA *rsa)
+{
+    EVP_PKEY *pkey;
+    VALUE obj;
+	
+    if (!rsa) {
+	return Qfalse;
+    }
+    if (!(pkey = EVP_PKEY_new())) {
+	return Qfalse;
+    }
+    if (!EVP_PKEY_assign_RSA(pkey, rsa)) {
+	EVP_PKEY_free(pkey);
+	return Qfalse;
+    }
+    WrapPKey(klass, obj, pkey);
+	
+    return obj;
+}
+
+VALUE
+ossl_rsa_new(EVP_PKEY *pkey)
+{
+    VALUE obj;
+
+    if (!pkey) {
+	obj = rsa_instance(cRSA, RSA_new());
+    }
+    else {
+	if (EVP_PKEY_type(pkey->type) != EVP_PKEY_RSA) {
+	    ossl_raise(rb_eTypeError, "Not a RSA key!");
+	}
+	WrapPKey(cRSA, obj, pkey);
+    }
+    if (obj == Qfalse) {
+	ossl_raise(eRSAError, NULL);
+    }
+
+    return obj;
+}
+
+/*
+ * Private
+ */
+/*
+ * CB for yielding when generating RSA data
+ */
+static void
+ossl_rsa_generate_cb(int p, int n, void *arg)
+{
+    VALUE ary;
+
+    ary = rb_ary_new2(2);
+    rb_ary_store(ary, 0, INT2NUM(p));
+    rb_ary_store(ary, 1, INT2NUM(n));
+
+    rb_yield(ary);
+}
+
+static RSA *
+rsa_generate(int size, int exp)
+{
+    void (*cb)(int, int, void *) = NULL;
+	
+    if (rb_block_given_p()) {
+	cb = ossl_rsa_generate_cb;
+    }
+    return RSA_generate_key(size, exp, cb, NULL);
+}
+
+static VALUE
+ossl_rsa_s_generate(int argc, VALUE *argv, VALUE klass)
+{
+    RSA *rsa;
+    VALUE size, exp;
+    VALUE obj;
+
+    rb_scan_args(argc, argv, "11", &size, &exp);
+
+    rsa = rsa_generate(NUM2INT(size), NIL_P(exp) ? RSA_F4 : NUM2INT(exp)); /* err handled by rsa_instance */
+    obj = rsa_instance(klass, rsa);
+
+    if (obj == Qfalse) {
+	RSA_free(rsa);
+	ossl_raise(eRSAError, NULL);
+    }
+
+    return obj;
+}
+
+static VALUE
+ossl_rsa_initialize(int argc, VALUE *argv, VALUE self)
+{
+    EVP_PKEY *pkey;
+    RSA *rsa;
+    BIO *in;
+    char *passwd = NULL;
+    VALUE buffer, pass;
+	
+    GetPKey(self, pkey);
+	
+    rb_scan_args(argc, argv, "11", &buffer, &pass);
+
+    if (FIXNUM_P(buffer)) {
+	rsa = rsa_generate(FIX2INT(buffer), NIL_P(pass) ? RSA_F4 : NUM2INT(pass));
+	if (!rsa) {
+	    ossl_raise(eRSAError, NULL);
+	}
+    }
+    else {
+	StringValue(buffer);
+	if (!NIL_P(pass)) {
+	    passwd = StringValuePtr(pass);
+	}
+	if (!(in = BIO_new_mem_buf(RSTRING(buffer)->ptr, RSTRING(buffer)->len))){
+	    ossl_raise(eRSAError, NULL);
+	}
+
+	rsa = PEM_read_bio_RSAPrivateKey(in, NULL, ossl_pem_passwd_cb, passwd);
+	if (!rsa) {
+	    BIO_reset(in);
+
+	    rsa = PEM_read_bio_RSAPublicKey(in, NULL, NULL, NULL);
+	}
+	if (!rsa) {
+	    BIO_reset(in);
+
+	    rsa = PEM_read_bio_RSA_PUBKEY(in, NULL, NULL, NULL);
+	}
+	BIO_free(in);
+
+	if (!rsa) {
+	    ossl_raise(eRSAError, "Neither PUB key nor PRIV key:");
+	}
+    }
+    if (!EVP_PKEY_assign_RSA(pkey, rsa)) {
+	RSA_free(rsa);
+	ossl_raise(eRSAError, NULL);
+    }
+
+    return self;
+}
+
+static VALUE
+ossl_rsa_is_public(VALUE self)
+{
+    EVP_PKEY *pkey;
+
+    GetPKeyRSA(self, pkey);
+    /*
+     * SURPRISE! :-))
+     * Every key is public at the same time!
+     */
+    return Qtrue;
+}
+
+static VALUE
+ossl_rsa_is_private(VALUE self)
+{
+    EVP_PKEY *pkey;
+	
+    GetPKeyRSA(self, pkey);
+	
+    return (RSA_PRIVATE(pkey->pkey.rsa)) ? Qtrue : Qfalse;
+}
+
+static VALUE
+ossl_rsa_export(int argc, VALUE *argv, VALUE self)
+{
+    EVP_PKEY *pkey;
+    BIO *out;
+    BUF_MEM *buf;
+    const EVP_CIPHER *ciph = NULL;
+    char *passwd = NULL;
+    VALUE cipher, pass, str;
+
+    GetPKeyRSA(self, pkey);
+
+    rb_scan_args(argc, argv, "02", &cipher, &pass);
+
+    if (!NIL_P(cipher)) {
+	ciph = GetCipherPtr(cipher);
+	if (!NIL_P(pass)) {
+	    passwd = StringValuePtr(pass);
+	}
+    }
+    if (!(out = BIO_new(BIO_s_mem()))) {
+	ossl_raise(eRSAError, NULL);
+    }
+    if (RSA_PRIVATE(pkey->pkey.rsa)) {
+	if (!PEM_write_bio_RSAPrivateKey(out, pkey->pkey.rsa, ciph,
+					 NULL, 0, ossl_pem_passwd_cb, passwd)) {
+	    BIO_free(out);
+	    ossl_raise(eRSAError, NULL);
+	}
+    } else {
+	if (!PEM_write_bio_RSAPublicKey(out, pkey->pkey.rsa)) {
+	    BIO_free(out);
+	    ossl_raise(eRSAError, NULL);
+	}
+    }
+    BIO_get_mem_ptr(out, &buf);
+    str = rb_str_new(buf->data, buf->length);
+    BIO_free(out);
+    
+    return str;
+}
+
+static VALUE
+ossl_rsa_public_encrypt(VALUE self, VALUE buffer)
+{
+    EVP_PKEY *pkey;
+    char *buf;
+    int buf_len;
+    VALUE str;
+	
+    GetPKeyRSA(self, pkey);
+
+    StringValue(buffer);
+	
+    if (!(buf = OPENSSL_malloc(RSA_size(pkey->pkey.rsa) + 16))) {
+	ossl_raise(eRSAError, NULL);
+    }
+    buf_len = RSA_public_encrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
+				 buf, pkey->pkey.rsa, RSA_PKCS1_PADDING);
+    if (buf_len < 0){
+	OPENSSL_free(buf);
+	ossl_raise(eRSAError, NULL);
+    }
+    str = rb_str_new(buf, buf_len);
+    OPENSSL_free(buf);
+
+    return str;
+}
+
+static VALUE
+ossl_rsa_public_decrypt(VALUE self, VALUE buffer)
+{
+    EVP_PKEY *pkey;
+    char *buf;
+    int buf_len;
+    VALUE str;
+
+    GetPKeyRSA(self, pkey);
+    StringValue(buffer);
+    if (!(buf = OPENSSL_malloc(RSA_size(pkey->pkey.rsa) + 16))) {
+	ossl_raise(eRSAError, NULL);
+    }
+    buf_len = RSA_public_decrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
+				 buf, pkey->pkey.rsa, RSA_PKCS1_PADDING);
+    if(buf_len < 0) {
+	OPENSSL_free(buf);
+	ossl_raise(eRSAError, NULL);
+    }
+    str = rb_str_new(buf, buf_len);
+    OPENSSL_free(buf);
+    
+    return str;
+}
+
+static VALUE
+ossl_rsa_private_encrypt(VALUE self, VALUE buffer)
+{
+    EVP_PKEY *pkey;
+    char *buf;
+    int buf_len;
+    VALUE str;
+	
+    GetPKeyRSA(self, pkey);
+    if (!RSA_PRIVATE(pkey->pkey.rsa)) {
+	ossl_raise(eRSAError, "PRIVATE key needed for this operation!");
+    }	
+    StringValue(buffer);
+    if (!(buf = OPENSSL_malloc(RSA_size(pkey->pkey.rsa) + 16))) {
+	ossl_raise(eRSAError, "Memory alloc error");
+    }
+    buf_len = RSA_private_encrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
+				  buf, pkey->pkey.rsa, RSA_PKCS1_PADDING);
+    if (buf_len < 0){
+	OPENSSL_free(buf);
+	ossl_raise(eRSAError, NULL);
+    }
+    str = rb_str_new(buf, buf_len);
+    OPENSSL_free(buf);
+    
+    return str;
+}
+
+static VALUE
+ossl_rsa_private_decrypt(VALUE self, VALUE buffer)
+{
+    EVP_PKEY *pkey;
+    char *buf;
+    int buf_len;
+    VALUE str;
+
+    GetPKeyRSA(self, pkey);
+    if (!RSA_PRIVATE(pkey->pkey.rsa)) {
+	ossl_raise(eRSAError, "Private RSA key needed!");
+    }
+    StringValue(buffer);
+    if (!(buf = OPENSSL_malloc(RSA_size(pkey->pkey.rsa) + 16))) {
+	ossl_raise(eRSAError, "Memory alloc error");
+    }
+    buf_len = RSA_private_decrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
+				  buf, pkey->pkey.rsa, RSA_PKCS1_PADDING);
+    if(buf_len < 0) {
+	OPENSSL_free(buf);
+	ossl_raise(eRSAError, NULL);
+    }
+    str = rb_str_new(buf, buf_len);
+    OPENSSL_free(buf);
+
+    return str;
+}
+
+/*
+ * Stores all parameters of key to the hash
+ * INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!!
+ * Don't use :-)) (I's up to you)
+ */
+static VALUE
+ossl_rsa_get_params(VALUE self)
+{
+    EVP_PKEY *pkey;
+    VALUE hash;
+
+    GetPKeyRSA(self, pkey);
+
+    hash = rb_hash_new();
+
+    rb_hash_aset(hash, rb_str_new2("n"), ossl_bn_new(pkey->pkey.rsa->n));
+    rb_hash_aset(hash, rb_str_new2("e"), ossl_bn_new(pkey->pkey.rsa->e));
+    rb_hash_aset(hash, rb_str_new2("d"), ossl_bn_new(pkey->pkey.rsa->d));
+    rb_hash_aset(hash, rb_str_new2("p"), ossl_bn_new(pkey->pkey.rsa->p));
+    rb_hash_aset(hash, rb_str_new2("q"), ossl_bn_new(pkey->pkey.rsa->q));
+    rb_hash_aset(hash, rb_str_new2("dmp1"), ossl_bn_new(pkey->pkey.rsa->dmp1));
+    rb_hash_aset(hash, rb_str_new2("dmq1"), ossl_bn_new(pkey->pkey.rsa->dmq1));
+    rb_hash_aset(hash, rb_str_new2("iqmp"), ossl_bn_new(pkey->pkey.rsa->iqmp));
+    
+    return hash;
+}
+
+/*
+ * Prints all parameters of key to buffer
+ * INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!!
+ * Don't use :-)) (I's up to you)
+ */
+static VALUE
+ossl_rsa_to_text(VALUE self)
+{
+    EVP_PKEY *pkey;
+    BIO *out;
+    BUF_MEM *buf;
+    VALUE str;
+
+    GetPKeyRSA(self, pkey);
+    if (!(out = BIO_new(BIO_s_mem()))) {
+	ossl_raise(eRSAError, NULL);
+    }
+    if (!RSA_print(out, pkey->pkey.rsa, 0)) { //offset = 0
+	BIO_free(out);
+	ossl_raise(eRSAError, NULL);
+    }
+    BIO_get_mem_ptr(out, &buf);
+    str = rb_str_new(buf->data, buf->length);
+    BIO_free(out);
+
+    return str;
+}
+
+/*
+ * Makes new instance RSA PUBLIC_KEY from PRIVATE_KEY
+ */
+static VALUE
+ossl_rsa_to_public_key(VALUE self)
+{
+    EVP_PKEY *pkey;
+    RSA *rsa;
+    VALUE obj;
+    
+    GetPKeyRSA(self, pkey);
+    /* err check performed by rsa_instance */
+    rsa = RSAPublicKey_dup(pkey->pkey.rsa);
+    obj = rsa_instance(CLASS_OF(self), rsa);
+    if (obj == Qfalse) {
+	RSA_free(rsa);
+	ossl_raise(eRSAError, NULL);
+    }
+    return obj;
+}
+
+/*
+ * TODO: Test me
+extern BN_CTX *ossl_bn_ctx;
+
+static VALUE
+ossl_rsa_blinding_on(VALUE self)
+{
+    EVP_PKEY *pkey;
+    
+    GetPKeyRSA(self, pkey);
+
+    if (RSA_blinding_on(pkey->pkey.rsa, ossl_bn_ctx) != 1) {
+	ossl_raise(eRSAError, NULL);
+    }
+    return self;
+}
+
+static VALUE
+ossl_rsa_blinding_off(VALUE self)
+{
+    EVP_PKEY *pkey;
+    
+    GetPKeyRSA(self, pkey);
+    RSA_blinding_off(pkey->pkey.rsa);
+
+    return self;
+}
+ */
+
+OSSL_PKEY_BN(rsa, n);
+OSSL_PKEY_BN(rsa, e);
+OSSL_PKEY_BN(rsa, d);
+OSSL_PKEY_BN(rsa, p);
+OSSL_PKEY_BN(rsa, q);
+OSSL_PKEY_BN(rsa, dmp1);
+OSSL_PKEY_BN(rsa, dmq1);
+OSSL_PKEY_BN(rsa, iqmp);
+
+/*
+ * INIT
+ */
+void
+Init_ossl_rsa()
+{
+    eRSAError = rb_define_class_under(mPKey, "RSAError", ePKeyError);
+
+    cRSA = rb_define_class_under(mPKey, "RSA", cPKey);
+
+    rb_define_singleton_method(cRSA, "generate", ossl_rsa_s_generate, -1);
+    rb_define_method(cRSA, "initialize", ossl_rsa_initialize, -1);
+	
+    rb_define_method(cRSA, "public?", ossl_rsa_is_public, 0);
+    rb_define_method(cRSA, "private?", ossl_rsa_is_private, 0);
+    rb_define_method(cRSA, "to_text", ossl_rsa_to_text, 0);
+    rb_define_method(cRSA, "export", ossl_rsa_export, -1);
+    rb_define_alias(cRSA, "to_pem", "export");
+    rb_define_alias(cRSA, "to_s", "export");
+    rb_define_method(cRSA, "public_key", ossl_rsa_to_public_key, 0);
+    rb_define_method(cRSA, "public_encrypt", ossl_rsa_public_encrypt, 1);
+    rb_define_method(cRSA, "public_decrypt", ossl_rsa_public_decrypt, 1);
+    rb_define_method(cRSA, "private_encrypt", ossl_rsa_private_encrypt, 1);
+    rb_define_method(cRSA, "private_decrypt", ossl_rsa_private_decrypt, 1);
+
+    DEF_OSSL_PKEY_BN(cRSA, rsa, n);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, e);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, d);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, p);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, q);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, dmp1);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, dmq1);
+    DEF_OSSL_PKEY_BN(cRSA, rsa, iqmp);
+
+    rb_define_method(cRSA, "params", ossl_rsa_get_params, 0);
+
+/*
+ * TODO: Test it
+    rb_define_method(cRSA, "blinding_on!", ossl_rsa_blinding_on, 0);
+    rb_define_method(cRSA, "blinding_off!", ossl_rsa_blinding_off, 0);
+ */
+}
+
+#else /* defined NO_RSA */
+#   warning >>> OpenSSL is compiled without RSA support <<<
+void
+Init_ossl_rsa()
+{
+    rb_warning("OpenSSL is compiled without RSA support");
+}
+#endif /* NO_RSA */
+