diff options
Diffstat (limited to 'crypto/evp/evp_enc.c')
-rw-r--r-- | crypto/evp/evp_enc.c | 254 |
1 files changed, 63 insertions, 191 deletions
diff --git a/crypto/evp/evp_enc.c b/crypto/evp/evp_enc.c index 6e582c4..30e0ca4 100644 --- a/crypto/evp/evp_enc.c +++ b/crypto/evp/evp_enc.c @@ -66,13 +66,15 @@ #endif #include "evp_locl.h" -const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT; +#ifdef OPENSSL_FIPS + #define M_do_cipher(ctx, out, in, inl) \ + EVP_Cipher(ctx,out,in,inl) +#else + #define M_do_cipher(ctx, out, in, inl) \ + ctx->cipher->do_cipher(ctx,out,in,inl) +#endif -void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx) - { - memset(ctx,0,sizeof(EVP_CIPHER_CTX)); - /* ctx->cipher=NULL; */ - } +const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT; EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void) { @@ -90,144 +92,6 @@ int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, return EVP_CipherInit_ex(ctx,cipher,NULL,key,iv,enc); } -int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl, - const unsigned char *key, const unsigned char *iv, int enc) - { - if (enc == -1) - enc = ctx->encrypt; - else - { - if (enc) - enc = 1; - ctx->encrypt = enc; - } -#ifndef OPENSSL_NO_ENGINE - /* Whether it's nice or not, "Inits" can be used on "Final"'d contexts - * so this context may already have an ENGINE! Try to avoid releasing - * the previous handle, re-querying for an ENGINE, and having a - * reinitialisation, when it may all be unecessary. */ - if (ctx->engine && ctx->cipher && (!cipher || - (cipher && (cipher->nid == ctx->cipher->nid)))) - goto skip_to_init; -#endif - if (cipher) - { - /* Ensure a context left lying around from last time is cleared - * (the previous check attempted to avoid this if the same - * ENGINE and EVP_CIPHER could be used). */ - EVP_CIPHER_CTX_cleanup(ctx); - - /* Restore encrypt field: it is zeroed by cleanup */ - ctx->encrypt = enc; -#ifndef OPENSSL_NO_ENGINE - if(impl) - { - if (!ENGINE_init(impl)) - { - EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); - return 0; - } - } - else - /* Ask if an ENGINE is reserved for this job */ - impl = ENGINE_get_cipher_engine(cipher->nid); - if(impl) - { - /* There's an ENGINE for this job ... (apparently) */ - const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid); - if(!c) - { - /* One positive side-effect of US's export - * control history, is that we should at least - * be able to avoid using US mispellings of - * "initialisation"? */ - EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); - return 0; - } - /* We'll use the ENGINE's private cipher definition */ - cipher = c; - /* Store the ENGINE functional reference so we know - * 'cipher' came from an ENGINE and we need to release - * it when done. */ - ctx->engine = impl; - } - else - ctx->engine = NULL; -#endif - - ctx->cipher=cipher; - if (ctx->cipher->ctx_size) - { - ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size); - if (!ctx->cipher_data) - { - EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE); - return 0; - } - } - else - { - ctx->cipher_data = NULL; - } - ctx->key_len = cipher->key_len; - ctx->flags = 0; - if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT) - { - if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) - { - EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); - return 0; - } - } - } - else if(!ctx->cipher) - { - EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET); - return 0; - } -#ifndef OPENSSL_NO_ENGINE -skip_to_init: -#endif - /* we assume block size is a power of 2 in *cryptUpdate */ - OPENSSL_assert(ctx->cipher->block_size == 1 - || ctx->cipher->block_size == 8 - || ctx->cipher->block_size == 16); - - if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) { - switch(EVP_CIPHER_CTX_mode(ctx)) { - - case EVP_CIPH_STREAM_CIPHER: - case EVP_CIPH_ECB_MODE: - break; - - case EVP_CIPH_CFB_MODE: - case EVP_CIPH_OFB_MODE: - - ctx->num = 0; - - case EVP_CIPH_CBC_MODE: - - OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <= - (int)sizeof(ctx->iv)); - if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx)); - memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx)); - break; - - default: - return 0; - break; - } - } - - if(key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) { - if(!ctx->cipher->init(ctx,key,iv,enc)) return 0; - } - ctx->buf_len=0; - ctx->final_used=0; - ctx->block_mask=ctx->cipher->block_size-1; - return 1; - } - int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, const unsigned char *in, int inl) { @@ -287,7 +151,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0) { - if(ctx->cipher->do_cipher(ctx,out,in,inl)) + if(M_do_cipher(ctx,out,in,inl)) { *outl=inl; return 1; @@ -314,7 +178,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, { j=bl-i; memcpy(&(ctx->buf[i]),in,j); - if(!ctx->cipher->do_cipher(ctx,out,ctx->buf,bl)) return 0; + if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0; inl-=j; in+=j; out+=bl; @@ -327,7 +191,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, inl-=i; if (inl > 0) { - if(!ctx->cipher->do_cipher(ctx,out,in,inl)) return 0; + if(!M_do_cipher(ctx,out,in,inl)) return 0; *outl+=inl; } @@ -371,7 +235,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) n=b-bl; for (i=bl; i<b; i++) ctx->buf[i]=n; - ret=ctx->cipher->do_cipher(ctx,out,ctx->buf,b); + ret=M_do_cipher(ctx,out,ctx->buf,b); if(ret) @@ -493,28 +357,6 @@ void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx) } } -int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c) - { - if (c->cipher != NULL) - { - if(c->cipher->cleanup && !c->cipher->cleanup(c)) - return 0; - /* Cleanse cipher context data */ - if (c->cipher_data) - OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size); - } - if (c->cipher_data) - OPENSSL_free(c->cipher_data); -#ifndef OPENSSL_NO_ENGINE - if (c->engine) - /* The EVP_CIPHER we used belongs to an ENGINE, release the - * functional reference we held for this reason. */ - ENGINE_finish(c->engine); -#endif - memset(c,0,sizeof(EVP_CIPHER_CTX)); - return 1; - } - int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen) { if(c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH) @@ -536,27 +378,6 @@ int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) return 1; } -int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) -{ - int ret; - if(!ctx->cipher) { - EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET); - return 0; - } - - if(!ctx->cipher->ctrl) { - EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED); - return 0; - } - - ret = ctx->cipher->ctrl(ctx, type, arg, ptr); - if(ret == -1) { - EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED); - return 0; - } - return ret; -} - int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key) { if (ctx->cipher->flags & EVP_CIPH_RAND_KEY) @@ -566,3 +387,54 @@ int EVP_CIPHER_CTX_rand_key(EVP_CIPHER_CTX *ctx, unsigned char *key) return 1; } +#ifndef OPENSSL_NO_ENGINE + +#ifdef OPENSSL_FIPS + +static int do_evp_enc_engine_full(EVP_CIPHER_CTX *ctx, const EVP_CIPHER **pcipher, ENGINE *impl) + { + if(impl) + { + if (!ENGINE_init(impl)) + { + EVPerr(EVP_F_DO_EVP_ENC_ENGINE_FULL, EVP_R_INITIALIZATION_ERROR); + return 0; + } + } + else + /* Ask if an ENGINE is reserved for this job */ + impl = ENGINE_get_cipher_engine((*pcipher)->nid); + if(impl) + { + /* There's an ENGINE for this job ... (apparently) */ + const EVP_CIPHER *c = ENGINE_get_cipher(impl, (*pcipher)->nid); + if(!c) + { + /* One positive side-effect of US's export + * control history, is that we should at least + * be able to avoid using US mispellings of + * "initialisation"? */ + EVPerr(EVP_F_DO_EVP_ENC_ENGINE_FULL, EVP_R_INITIALIZATION_ERROR); + return 0; + } + /* We'll use the ENGINE's private cipher definition */ + *pcipher = c; + /* Store the ENGINE functional reference so we know + * 'cipher' came from an ENGINE and we need to release + * it when done. */ + ctx->engine = impl; + } + else + ctx->engine = NULL; + return 1; + } + +void int_EVP_CIPHER_init_engine_callbacks(void) + { + int_EVP_CIPHER_set_engine_callbacks( + ENGINE_finish, do_evp_enc_engine_full); + } + +#endif + +#endif |