diff options
Diffstat (limited to 'crypto/evp/e_rd.c')
-rw-r--r-- | crypto/evp/e_rd.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/crypto/evp/e_rd.c b/crypto/evp/e_rd.c new file mode 100644 index 0000000000..e51d9bc1ec --- /dev/null +++ b/crypto/evp/e_rd.c @@ -0,0 +1,131 @@ +/* ==================================================================== + * Copyright (c) 2000 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * 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 + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * openssl-core@openssl.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.openssl.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + */ + +#include <openssl/evp.h> +#include <openssl/err.h> +#include <memory.h> +#include <assert.h> + +static EVP_CIPHER rd_cipher[3][3]; + +static anSizes[]={16,24,32}; +static anNIDs[3][3]= + { + { NID_rijndael_ecb_k128_b128,NID_rijndael_ecb_k192_b128,NID_rijndael_ecb_k256_b128 }, + { NID_rijndael_ecb_k128_b192,NID_rijndael_ecb_k192_b192,NID_rijndael_ecb_k256_b192 }, + { NID_rijndael_ecb_k128_b256,NID_rijndael_ecb_k192_b256,NID_rijndael_ecb_k256_b256 } + }; + +static int rd_init_ecb(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) + { + RIJNDAEL_KEY *k=&ctx->c.rijndael; + + k->enc=enc; + k->rounds=ctx->cipher->key_len/4+6; + rijndaelKeySched((const word8 (*)[4])key,k->keySched,k->rounds); + if(!k->enc) + rijndaelKeyEncToDec(k->keySched,k->rounds); + memcpy(k->iv,iv,ctx->cipher->iv_len); + + return 1; + } + +static int rd_cipher_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, unsigned int inl) + { + while(inl > 0) + { + if(ctx->c.rijndael.enc) + rijndaelEncrypt(in,out,ctx->c.rijndael.keySched, + ctx->c.rijndael.rounds); + else + rijndaelDecrypt(in,out,ctx->c.rijndael.keySched, + ctx->c.rijndael.rounds); + inl-=16; + in+=16; + out+=16; + } + assert(inl == 0); + + return 1; + } + +EVP_CIPHER *EVP_rijndael_ecb(int nBlockLength,int nKeyLength) + { + EVP_CIPHER *c; + + if(nBlockLength < 0 || nBlockLength > 2) + { + EVPerr(EVP_F_EVP_RIJNDAEL,EVP_R_BAD_BLOCK_LENGTH); + return NULL; + } + if(nKeyLength < 0 || nKeyLength > 2) + { + EVPerr(EVP_F_EVP_RIJNDAEL,EVP_R_BAD_KEY_LENGTH); + return NULL; + } + + c=&rd_cipher[nKeyLength][nBlockLength]; + + memset(c,'\0',sizeof *c); + + c->nid=anNIDs[nBlockLength][nKeyLength]; + c->block_size=anSizes[nBlockLength]; + c->key_len=anSizes[nKeyLength]; + c->iv_len=16; + c->flags=EVP_CIPH_ECB_MODE; + c->init=rd_init_ecb; + c->do_cipher=rd_cipher_ecb; + c->ctx_size=sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+ + sizeof((((EVP_CIPHER_CTX *)NULL)->c.rijndael)); + + return c; + } |