diff options
author | Matt Caswell <matt@openssl.org> | 2019-04-03 15:38:07 +0100 |
---|---|---|
committer | Matt Caswell <matt@openssl.org> | 2019-04-19 09:31:54 +0100 |
commit | df05f2ce6d496232f3c86acb299a128d0eb3ef42 (patch) | |
tree | 75b72f80d4059c21cee27433bad1ed3c5753f01e | |
parent | 1393722af384cdf310645c598bbd06a3bbaa2f31 (diff) |
Make EVP_Encrypt*/EVP_Decrypt* and EVP_Cipher* provider aware
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/8700)
-rw-r--r-- | crypto/err/openssl.txt | 3 | ||||
-rw-r--r-- | crypto/evp/cmeth_lib.c | 32 | ||||
-rw-r--r-- | crypto/evp/digest.c | 2 | ||||
-rw-r--r-- | crypto/evp/evp_enc.c | 445 | ||||
-rw-r--r-- | crypto/evp/evp_err.c | 6 | ||||
-rw-r--r-- | crypto/evp/evp_lib.c | 18 | ||||
-rw-r--r-- | crypto/evp/evp_locl.h | 4 | ||||
-rw-r--r-- | crypto/include/internal/evp_int.h | 20 | ||||
-rw-r--r-- | include/openssl/core_names.h | 5 | ||||
-rw-r--r-- | include/openssl/core_numbers.h | 45 | ||||
-rw-r--r-- | include/openssl/evp.h | 3 | ||||
-rw-r--r-- | include/openssl/evperr.h | 3 | ||||
-rw-r--r-- | providers/common/digests/sha2.c | 2 | ||||
-rw-r--r-- | providers/legacy/digests/md2.c | 2 | ||||
-rw-r--r-- | util/libcrypto.num | 2 |
15 files changed, 559 insertions, 33 deletions
diff --git a/crypto/err/openssl.txt b/crypto/err/openssl.txt index 18aa16c748..6a904d8e65 100644 --- a/crypto/err/openssl.txt +++ b/crypto/err/openssl.txt @@ -785,6 +785,8 @@ EVP_F_EVP_CIPHER_ASN1_TO_PARAM:204:EVP_CIPHER_asn1_to_param EVP_F_EVP_CIPHER_CTX_COPY:163:EVP_CIPHER_CTX_copy EVP_F_EVP_CIPHER_CTX_CTRL:124:EVP_CIPHER_CTX_ctrl EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH:122:EVP_CIPHER_CTX_set_key_length +EVP_F_EVP_CIPHER_CTX_SET_PADDING:237:EVP_CIPHER_CTX_set_padding +EVP_F_EVP_CIPHER_FROM_DISPATCH:238:evp_cipher_from_dispatch EVP_F_EVP_CIPHER_PARAM_TO_ASN1:205:EVP_CIPHER_param_to_asn1 EVP_F_EVP_DECRYPTFINAL_EX:101:EVP_DecryptFinal_ex EVP_F_EVP_DECRYPTUPDATE:166:EVP_DecryptUpdate @@ -2381,6 +2383,7 @@ EVP_R_INVALID_FIPS_MODE:168:invalid fips mode EVP_R_INVALID_KEY:163:invalid key EVP_R_INVALID_KEY_LENGTH:130:invalid key length EVP_R_INVALID_OPERATION:148:invalid operation +EVP_R_INVALID_PROVIDER_FUNCTIONS:193:invalid provider functions EVP_R_INVALID_SALT_LENGTH:186:invalid salt length EVP_R_KEYGEN_FAILURE:120:keygen failure EVP_R_KEY_SETUP_FAILED:180:key setup failed diff --git a/crypto/evp/cmeth_lib.c b/crypto/evp/cmeth_lib.c index 6c328c0deb..0520157cd8 100644 --- a/crypto/evp/cmeth_lib.c +++ b/crypto/evp/cmeth_lib.c @@ -11,6 +11,7 @@ #include <openssl/evp.h> #include "internal/evp_int.h" +#include "internal/provider.h" #include "evp_locl.h" EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len) @@ -21,6 +22,12 @@ EVP_CIPHER *EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len) cipher->nid = cipher_type; cipher->block_size = block_size; cipher->key_len = key_len; + cipher->lock = CRYPTO_THREAD_lock_new(); + if (cipher->lock == NULL) { + OPENSSL_free(cipher); + return NULL; + } + cipher->refcnt = 1; } return cipher; } @@ -30,14 +37,35 @@ EVP_CIPHER *EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher) EVP_CIPHER *to = EVP_CIPHER_meth_new(cipher->nid, cipher->block_size, cipher->key_len); - if (to != NULL) + if (to != NULL) { + CRYPTO_RWLOCK *lock = to->lock; + memcpy(to, cipher, sizeof(*to)); + to->lock = lock; + } return to; } void EVP_CIPHER_meth_free(EVP_CIPHER *cipher) { - OPENSSL_free(cipher); + if (cipher != NULL) { + int i; + + CRYPTO_DOWN_REF(&cipher->refcnt, &i, cipher->lock); + if (i > 0) + return; + ossl_provider_free(cipher->prov); + CRYPTO_THREAD_lock_free(cipher->lock); + OPENSSL_free(cipher); + } +} + +int EVP_CIPHER_upref(EVP_CIPHER *cipher) +{ + int ref = 0; + + CRYPTO_UP_REF(&cipher->refcnt, &ref, cipher->lock); + return 1; } int EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len) diff --git a/crypto/evp/digest.c b/crypto/evp/digest.c index e4787e6256..043e456297 100644 --- a/crypto/evp/digest.c +++ b/crypto/evp/digest.c @@ -517,7 +517,7 @@ static void *evp_md_from_dispatch(int mdtype, const OSSL_DISPATCH *fns, md->dinit = OSSL_get_OP_digest_init(fns); fncnt++; break; - case OSSL_FUNC_DIGEST_UPDDATE: + case OSSL_FUNC_DIGEST_UPDATE: if (md->dupdate != NULL) break; md->dupdate = OSSL_get_OP_digest_update(fns); diff --git a/crypto/evp/evp_enc.c b/crypto/evp/evp_enc.c index 641ad19744..09d51731a3 100644 --- a/crypto/evp/evp_enc.c +++ b/crypto/evp/evp_enc.c @@ -15,25 +15,46 @@ #include <openssl/rand.h> #include <openssl/rand_drbg.h> #include <openssl/engine.h> +#include <openssl/params.h> +#include <openssl/core_names.h> #include "internal/evp_int.h" +#include "internal/provider.h" #include "evp_locl.h" -int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *c) +int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *ctx) { - if (c == NULL) + if (ctx == NULL) return 1; - if (c->cipher != NULL) { - if (c->cipher->cleanup && !c->cipher->cleanup(c)) + + if (ctx->cipher == NULL || ctx->cipher->prov == NULL) + goto legacy; + + if (ctx->provctx != NULL) { + if (ctx->cipher->freectx != NULL) + ctx->cipher->freectx(ctx->provctx); + ctx->provctx = NULL; + } + if (ctx->fetched_cipher != NULL) + EVP_CIPHER_meth_free(ctx->fetched_cipher); + memset(ctx, 0, sizeof(*ctx)); + + return 1; + + /* TODO(3.0): Remove legacy code below */ + legacy: + + if (ctx->cipher != NULL) { + if (ctx->cipher->cleanup && !ctx->cipher->cleanup(ctx)) return 0; /* Cleanse cipher context data */ - if (c->cipher_data && c->cipher->ctx_size) - OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size); + if (ctx->cipher_data && ctx->cipher->ctx_size) + OPENSSL_cleanse(ctx->cipher_data, ctx->cipher->ctx_size); } - OPENSSL_free(c->cipher_data); + OPENSSL_free(ctx->cipher_data); #ifndef OPENSSL_NO_ENGINE - ENGINE_finish(c->engine); + ENGINE_finish(ctx->engine); #endif - memset(c, 0, sizeof(*c)); + memset(ctx, 0, sizeof(*ctx)); return 1; } @@ -60,13 +81,30 @@ 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) + EVP_CIPHER *provciph = NULL; + ENGINE *tmpimpl = NULL; + const EVP_CIPHER *tmpcipher; + + /* + * enc == 1 means we are encrypting. + * enc == 0 means we are decrypting. + * enc == -1 means, use the previously initialised value for encrypt/decrypt + */ + if (enc == -1) { enc = ctx->encrypt; - else { + } else { if (enc) enc = 1; ctx->encrypt = enc; } + + if (cipher == NULL && ctx->cipher == NULL) { + EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET); + return 0; + } + + /* TODO(3.0): Legacy work around code below. Remove this */ + #ifndef OPENSSL_NO_ENGINE /* * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so @@ -77,11 +115,114 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, if (ctx->engine && ctx->cipher && (cipher == NULL || cipher->nid == ctx->cipher->nid)) goto skip_to_init; + + if (cipher != NULL && impl == NULL) { + /* Ask if an ENGINE is reserved for this job */ + tmpimpl = ENGINE_get_cipher_engine(cipher->nid); + } #endif - if (cipher) { + + /* + * If there are engines involved then we should use legacy handling for now. + */ + if (ctx->engine != NULL + || impl != NULL + || tmpimpl != NULL) { + if (ctx->cipher == ctx->fetched_cipher) + ctx->cipher = NULL; + EVP_CIPHER_meth_free(ctx->fetched_cipher); + ctx->fetched_cipher = NULL; + goto legacy; + } + + tmpcipher = (cipher == NULL) ? ctx->cipher : cipher; + + if (tmpcipher->prov == NULL) { + switch(tmpcipher->nid) { + default: + goto legacy; + } + } + + /* + * Ensure a context left lying around from last time is cleared + * (legacy code) + */ + if (cipher != NULL && ctx->cipher != NULL) { + OPENSSL_clear_free(ctx->cipher_data, ctx->cipher->ctx_size); + ctx->cipher_data = NULL; + } + + + /* TODO(3.0): Start of non-legacy code below */ + + /* Ensure a context left lying around from last time is cleared */ + if (cipher != NULL && ctx->cipher != NULL) { + unsigned long flags = ctx->flags; + + EVP_CIPHER_CTX_reset(ctx); + /* Restore encrypt and flags */ + ctx->encrypt = enc; + ctx->flags = flags; + } + + if (cipher != NULL) + ctx->cipher = cipher; + else + cipher = ctx->cipher; + + if (cipher->prov == NULL) { + provciph = EVP_CIPHER_fetch(NULL, OBJ_nid2sn(cipher->nid), ""); + if (provciph == NULL) { + EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); + return 0; + } + cipher = provciph; + EVP_CIPHER_meth_free(ctx->fetched_cipher); + ctx->fetched_cipher = provciph; + } + + ctx->cipher = cipher; + if (ctx->provctx == NULL) { + ctx->provctx = ctx->cipher->newctx(); + if (ctx->provctx == NULL) { + EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); + return 0; + } + } + + if ((ctx->flags & EVP_CIPH_NO_PADDING) != 0) { /* - * Ensure a context left lying around from last time is cleared (the - * previous check attempted to avoid this if the same ENGINE and + * If this ctx was already set up for no padding then we need to tell + * the new cipher about it. + */ + if (!EVP_CIPHER_CTX_set_padding(ctx, 0)) + return 0; + } + + if (enc) { + if (ctx->cipher->einit == NULL) { + EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); + return 0; + } + + return ctx->cipher->einit(ctx->provctx, key, iv); + } + + if (ctx->cipher->dinit == NULL) { + EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR); + return 0; + } + + return ctx->cipher->dinit(ctx->provctx, key, iv); + + /* TODO(3.0): Remove legacy code below */ + legacy: + + if (cipher != NULL) { + /* + * Ensure a context left lying around from last time is cleared (we + * previously attempted to avoid this if the same ENGINE and * EVP_CIPHER could be used). */ if (ctx->cipher) { @@ -92,18 +233,19 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ctx->flags = flags; } #ifndef OPENSSL_NO_ENGINE - if (impl) { + if (impl != NULL) { 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) { + } else { + impl = tmpimpl; + } + if (impl != NULL) { /* There's an ENGINE for this job ... (apparently) */ const EVP_CIPHER *c = ENGINE_get_cipher(impl, cipher->nid); - if (!c) { + + if (c == NULL) { /* * One positive side-effect of US's export control history, * is that we should at least be able to avoid using US @@ -119,8 +261,9 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, * from an ENGINE and we need to release it when done. */ ctx->engine = impl; - } else + } else { ctx->engine = NULL; + } #endif ctx->cipher = cipher; @@ -144,9 +287,6 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, 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: @@ -377,12 +517,34 @@ static int evp_EncryptDecryptUpdate(EVP_CIPHER_CTX *ctx, int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, const unsigned char *in, int inl) { + int ret; + size_t soutl; + /* Prevent accidental use of decryption context when encrypting */ if (!ctx->encrypt) { EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_INVALID_OPERATION); return 0; } + if (ctx->cipher == NULL || ctx->cipher->prov == NULL) + goto legacy; + + if (ctx->cipher->cupdate == NULL) { + EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_UPDATE_ERROR); + return 0; + } + ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl, in, (size_t)inl); + + if (soutl > INT_MAX) { + EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_UPDATE_ERROR); + return 0; + } + *outl = soutl; + return ret; + + /* TODO(3.0): Remove legacy code below */ + legacy: + return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl); } @@ -397,6 +559,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) { int n, ret; unsigned int i, b, bl; + size_t soutl; /* Prevent accidental use of decryption context when encrypting */ if (!ctx->encrypt) { @@ -404,6 +567,27 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) return 0; } + if (ctx->cipher == NULL || ctx->cipher->prov == NULL) + goto legacy; + + if (ctx->cipher->cfinal == NULL) { + EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_FINAL_ERROR); + return 0; + } + + ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl); + + if (soutl > INT_MAX) { + EVPerr(EVP_F_EVP_ENCRYPTFINAL_EX, EVP_R_FINAL_ERROR); + return 0; + } + *outl = soutl; + + return ret; + + /* TODO(3.0): Remove legacy code below */ + legacy: + if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) { ret = ctx->cipher->do_cipher(ctx, out, NULL, 0); if (ret < 0) @@ -444,8 +628,9 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, const unsigned char *in, int inl) { - int fix_len, cmpl = inl; + int fix_len, cmpl = inl, ret; unsigned int b; + size_t soutl; /* Prevent accidental use of encryption context when decrypting */ if (ctx->encrypt) { @@ -453,6 +638,28 @@ int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl, return 0; } + if (ctx->cipher == NULL || ctx->cipher->prov == NULL) + goto legacy; + + if (ctx->cipher->cupdate == NULL) { + EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR); + return 0; + } + ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl, in, (size_t)inl); + + if (ret) { + if (soutl > INT_MAX) { + EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR); + return 0; + } + *outl = soutl; + } + + return ret; + + /* TODO(3.0): Remove legacy code below */ + legacy: + b = ctx->cipher->block_size; if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) @@ -527,6 +734,8 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) { int i, n; unsigned int b; + size_t soutl; + int ret; /* Prevent accidental use of encryption context when decrypting */ if (ctx->encrypt) { @@ -534,6 +743,29 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) return 0; } + if (ctx->cipher == NULL || ctx->cipher->prov == NULL) + goto legacy; + + if (ctx->cipher->cfinal == NULL) { + EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_FINAL_ERROR); + return 0; + } + + ret = ctx->cipher->cfinal(ctx->provctx, out, &soutl); + + if (ret) { + if (soutl > INT_MAX) { + EVPerr(EVP_F_EVP_DECRYPTFINAL_EX, EVP_R_FINAL_ERROR); + return 0; + } + *outl = soutl; + } + + return ret; + + /* TODO(3.0): Remove legacy code below */ + legacy: + *outl = 0; if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) { @@ -590,7 +822,7 @@ int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen) { if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH) return EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_KEY_LENGTH, keylen, NULL); - if (c->key_len == keylen) + if (EVP_CIPHER_CTX_key_length(c) == keylen) return 1; if ((keylen > 0) && (c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH)) { c->key_len = keylen; @@ -606,6 +838,24 @@ int EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *ctx, int pad) ctx->flags &= ~EVP_CIPH_NO_PADDING; else ctx->flags |= EVP_CIPH_NO_PADDING; + + if (ctx->cipher != NULL && ctx->cipher->prov != NULL) { + OSSL_PARAM params[] = { + OSSL_PARAM_int(OSSL_CIPHER_PARAM_PADDING, NULL), + OSSL_PARAM_END + }; + + params[0].data = &pad; + + if (ctx->cipher->set_params == NULL) { + EVPerr(EVP_F_EVP_CIPHER_CTX_SET_PADDING, EVP_R_CTRL_NOT_IMPLEMENTED); + return 0; + } + + if (!ctx->cipher->set_params(ctx->provctx, params)) + return 0; + } + return 1; } @@ -647,6 +897,36 @@ int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_INPUT_NOT_INITIALIZED); return 0; } + + if (in->cipher->prov == NULL) + goto legacy; + + if (in->cipher->dupctx == NULL) { + EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_NOT_ABLE_TO_COPY_CTX); + return 0; + } + + EVP_CIPHER_CTX_reset(out); + + *out = *in; + out->provctx = NULL; + + if (in->fetched_cipher != NULL || !EVP_CIPHER_upref(in->fetched_cipher)) { + out->fetched_cipher = NULL; + return 0; + } + + out->provctx = in->cipher->dupctx(in->provctx); + if (out->provctx == NULL) { + EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_NOT_ABLE_TO_COPY_CTX); + return 0; + } + + return 1; + + /* TODO(3.0): Remove legacy code below */ + legacy: + #ifndef OPENSSL_NO_ENGINE /* Make sure it's safe to copy a cipher context using an ENGINE */ if (in->engine && !ENGINE_init(in->engine)) { @@ -676,3 +956,116 @@ int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in) } return 1; } + +static void *evp_cipher_from_dispatch(int nid, const OSSL_DISPATCH *fns, + OSSL_PROVIDER *prov) +{ + EVP_CIPHER *cipher = NULL; + int fnciphcnt = 0, fnctxcnt = 0; + + if ((cipher = EVP_CIPHER_meth_new(nid, 0, 0)) == NULL) + return NULL; + + for (; fns->function_id != 0; fns++) { + switch (fns->function_id) { + case OSSL_FUNC_CIPHER_NEWCTX: + if (cipher->newctx != NULL) + break; + cipher->newctx = OSSL_get_OP_cipher_newctx(fns); + fnctxcnt++; + break; + case OSSL_FUNC_CIPHER_ENCRYPT_INIT: + if (cipher->einit != NULL) + break; + cipher->einit = OSSL_get_OP_cipher_encrypt_init(fns); + fnciphcnt++; + break; + case OSSL_FUNC_CIPHER_DECRYPT_INIT: + if (cipher->dinit != NULL) + break; + cipher->dinit = OSSL_get_OP_cipher_decrypt_init(fns); + fnciphcnt++; + break; + case OSSL_FUNC_CIPHER_UPDATE: + if (cipher->cupdate != NULL) + break; + cipher->cupdate = OSSL_get_OP_cipher_update(fns); + fnciphcnt++; + break; + case OSSL_FUNC_CIPHER_FINAL: + if (cipher->cfinal != NULL) + break; + cipher->cfinal = OSSL_get_OP_cipher_final(fns); + fnciphcnt++; + break; + case OSSL_FUNC_CIPHER_FREECTX: + if (cipher->freectx != NULL) + break; + cipher->freectx = OSSL_get_OP_cipher_freectx(fns); + fnctxcnt++; + break; + case OSSL_FUNC_CIPHER_DUPCTX: + if (cipher->dupctx != NULL) + break; + cipher->dupctx = OSSL_get_OP_cipher_dupctx(fns); + break; + case OSSL_FUNC_CIPHER_KEY_LENGTH: + if (cipher->key_length != NULL) + break; + cipher->key_length = OSSL_get_OP_cipher_key_length(fns); + break; + case OSSL_FUNC_CIPHER_GET_PARAMS: + if (cipher->get_params != NULL) + break; + cipher->get_params = OSSL_get_OP_cipher_get_params(fns); + break; + case OSSL_FUNC_CIPHER_SET_PARAMS: + if (cipher->set_params != NULL) + break; + cipher->set_params = OSSL_get_OP_cipher_set_params(fns); + break; + } + } + if ((fnciphcnt != 3 && fnciphcnt != 4) + || fnctxcnt != 2) { + /* + * In order to be a consistent set of functions we must have at least + * a complete set of "encrypt" functions, or a complete set of "decrypt" + * functions. In both cases we need a complete set of context management + * functions + */ + EVP_CIPHER_meth_free(cipher); + EVPerr(EVP_F_EVP_CIPHER_FROM_DISPATCH, EVP_R_INVALID_PROVIDER_FUNCTIONS); + return NULL; + } + cipher->prov = prov; + if (prov != NULL) + ossl_provider_upref(prov); + + return cipher; +} + +static int evp_cipher_upref(void *cipher) +{ + return EVP_CIPHER_upref(cipher); +} + +static void evp_cipher_free(void *cipher) +{ + EVP_CIPHER_meth_free(cipher); +} + +static int evp_cipher_nid(void *vcipher) +{ + EVP_CIPHER *cipher = vcipher; + + return cipher->nid; +} + +EVP_CIPHER *EVP_CIPHER_fetch(OPENSSL_CTX *ctx, const char *algorithm, + const char *properties) +{ + return evp_generic_fetch(ctx, OSSL_OP_CIPHER, algorithm, properties, + evp_cipher_from_dispatch, evp_cipher_upref, + evp_cipher_free, evp_cipher_nid); +} diff --git a/crypto/evp/evp_err.c b/crypto/evp/evp_err.c index a9f8800b08..9c79f8655e 100644 --- a/crypto/evp/evp_err.c +++ b/crypto/evp/evp_err.c @@ -53,6 +53,10 @@ static const ERR_STRING_DATA EVP_str_functs[] = { "EVP_CIPHER_CTX_ctrl"}, {ERR_PACK(ERR_LIB_EVP, EVP_F_EVP_CIPHER_CTX_SET_KEY_LENGTH, 0), "EVP_CIPHER_CTX_set_key_length"}, + {ERR_PACK(ERR_LIB_EVP, EVP_F_EVP_CIPHER_CTX_SET_PADDING, 0), + "EVP_CIPHER_CTX_set_padding"}, + {ERR_PACK(ERR_LIB_EVP, EVP_F_EVP_CIPHER_FROM_DISPATCH, 0), + "evp_cipher_from_dispatch"}, {ERR_PACK(ERR_LIB_EVP, EVP_F_EVP_CIPHER_PARAM_TO_ASN1, 0), "EVP_CIPHER_param_to_asn1"}, {ERR_PACK(ERR_LIB_EVP, EVP_F_EVP_DECRYPTFINAL_EX, 0), @@ -246,6 +250,8 @@ static const ERR_STRING_DATA EVP_str_reasons[] = { {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_INVALID_KEY), "invalid key"}, {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_INVALID_KEY_LENGTH), "invalid key length"}, {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_INVALID_OPERATION), "invalid operation"}, + {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_INVALID_PROVIDER_FUNCTIONS), + "invalid provider functions"}, {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_INVALID_SALT_LENGTH), "invalid salt length"}, {ERR_PACK(ERR_LIB_EVP, 0, EVP_R_KEYGEN_FAILURE), "keygen failure"}, diff --git a/crypto/evp/evp_lib.c b/crypto/evp/evp_lib.c index 914a19cc5e..c99dd9e898 100644 --- a/crypto/evp/evp_lib.c +++ b/crypto/evp/evp_lib.c @@ -278,11 +278,23 @@ void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num) int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) { + if (cipher->prov != NULL) { + if (cipher->key_length != NULL) + return (int)cipher->key_length(); + return -1; + } + return cipher->key_len; } int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) { + /* + * TODO(3.0): This may need to change if/when we introduce variable length + * key ciphers into the providers. + */ + if (ctx->cipher != NULL && ctx->cipher->prov != NULL) + return EVP_CIPHER_key_length(ctx->cipher); return ctx->key_len; } @@ -353,12 +365,16 @@ EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type) } return md; } + EVP_MD *EVP_MD_meth_dup(const EVP_MD *md) { EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type); - if (to != NULL) + if (to != NULL) { + CRYPTO_RWLOCK *lock = to->lock; memcpy(to, md, sizeof(*to)); + to->lock = lock; + } return to; } diff --git a/crypto/evp/evp_locl.h b/crypto/evp/evp_locl.h index efa2db8f75..3172c497bf 100644 --- a/crypto/evp/evp_locl.h +++ b/crypto/evp/evp_locl.h @@ -44,6 +44,10 @@ struct evp_cipher_ctx_st { int final_used; int block_mask; unsigned char final[EVP_MAX_BLOCK_LENGTH]; /* possible final block */ + + /* Provider ctx */ + void *provctx; + EVP_CIPHER *fetched_cipher; } /* EVP_CIPHER_CTX */ ; struct evp_mac_ctx_st { diff --git a/crypto/include/internal/evp_int.h b/crypto/include/internal/evp_int.h index c932898139..e428a63d10 100644 --- a/crypto/include/internal/evp_int.h +++ b/crypto/include/internal/evp_int.h @@ -210,10 +210,14 @@ struct evp_md_st { struct evp_cipher_st { int nid; + int block_size; /* Default value for variable length ciphers */ int key_len; int iv_len; + + /* Legacy structure members */ + /* TODO(3.0): Remove these */ /* Various flags */ unsigned long flags; /* init key */ @@ -234,6 +238,22 @@ struct evp_cipher_st { int (*ctrl) (EVP_CIPHER_CTX *, int type, int arg, void *ptr); /* Application data */ void *app_data; + + /* New structure members */ + /* TODO(3.0): Remove above comment when legacy has gone */ + OSSL_PROVIDER *prov; + CRYPTO_REF_COUNT refcnt; + CRYPTO_RWLOCK *lock; + OSSL_OP_cipher_newctx_fn *newctx; + OSSL_OP_cipher_encrypt_init_fn *einit; + OSSL_OP_cipher_decrypt_init_fn *dinit; + OSSL_OP_cipher_update_fn *cupdate; + OSSL_OP_cipher_final_fn *cfinal; + OSSL_OP_cipher_freectx_fn *freectx; + OSSL_OP_cipher_dupctx_fn *dupctx; + OSSL_OP_cipher_key_length_fn *key_length; + OSSL_OP_cipher_get_params_fn *get_params; + OSSL_OP_cipher_get_params_fn *set_params; } /* EVP_CIPHER */ ; /* Macros to code block cipher wrappers */ diff --git a/include/openssl/core_names.h b/include/openssl/core_names.h index be4a6478be..7a41778c2f 100644 --- a/include/openssl/core_names.h +++ b/include/openssl/core_names.h @@ -34,6 +34,11 @@ extern "C" { */ #define OSSL_PROV_PARAM_BUILDINFO "buildinfo" + +/* Well known cipher parameters */ + +#define OSSL_CIPHER_PARAM_PADDING "padding" + # ifdef __cplusplus } # endif diff --git a/include/openssl/core_numbers.h b/include/openssl/core_numbers.h index 20543812f4..7b17d2cbb8 100644 --- a/include/openssl/core_numbers.h +++ b/include/openssl/core_numbers.h @@ -78,7 +78,7 @@ OSSL_CORE_MAKE_FUNC(const OSSL_ALGORITHM *,provider_query_operation, # define OSSL_FUNC_DIGEST_NEWCTX 1 # define OSSL_FUNC_DIGEST_INIT 2 -# define OSSL_FUNC_DIGEST_UPDDATE 3 +# define OSSL_FUNC_DIGEST_UPDATE 3 # define OSSL_FUNC_DIGEST_FINAL 4 # define OSSL_FUNC_DIGEST_DIGEST 5 # define OSSL_FUNC_DIGEST_FREECTX 6 @@ -86,6 +86,7 @@ OSSL_CORE_MAKE_FUNC(const OSSL_ALGORITHM *,provider_query_operation, # define OSSL_FUNC_DIGEST_SIZE 8 # define OSSL_FUNC_DIGEST_BLOCK_SIZE 9 + OSSL_CORE_MAKE_FUNC(void *, OP_digest_newctx, (void)) OSSL_CORE_MAKE_FUNC(int, OP_digest_init, (void *vctx)) OSSL_CORE_MAKE_FUNC(int, OP_digest_update, @@ -95,12 +96,54 @@ OSSL_CORE_MAKE_FUNC(int, OP_digest_final, OSSL_CORE_MAKE_FUNC(int, OP_digest_digest, (const unsigned char *in, size_t inl, unsigned char *out, size_t *out_l, size_t outsz)) + OSSL_CORE_MAKE_FUNC(void, OP_digest_cleanctx, (void *vctx)) OSSL_CORE_MAKE_FUNC(void, OP_digest_freectx, (void *vctx)) OSSL_CORE_MAKE_FUNC(void *, OP_digest_dupctx, (void *vctx)) OSSL_CORE_MAKE_FUNC(size_t, OP_digest_size, (void)) OSSL_CORE_MAKE_FUNC(size_t, OP_digest_block_size, (void)) + +/* Symmetric Ciphers */ + +# define OSSL_OP_CIPHER 2 + +# define OSSL_FUNC_CIPHER_NEWCTX 1 +# define OSSL_FUNC_CIPHER_ENCRYPT_INIT 2 +# define OSSL_FUNC_CIPHER_DECRYPT_INIT 3 +# define OSSL_FUNC_CIPHER_UPDATE 4 +# define OSSL_FUNC_CIPHER_FINAL 5 +# define OSSL_FUNC_CIPHER_FREECTX 6 +# define OSSL_FUNC_CIPHER_DUPCTX 7 +# define OSSL_FUNC_CIPHER_KEY_LENGTH 8 +# define OSSL_FUNC_CIPHER_GET_PARAMS 9 +# define OSSL_FUNC_CIPHER_SET_PARAMS 10 + + +OSSL_CORE_MAKE_FUNC(void *, OP_cipher_newctx, (void)) +OSSL_CORE_MAKE_FUNC(int, OP_cipher_encrypt_init, (void *vctx, + const unsigned char *key, + const unsigned char *iv)) +OSSL_CORE_MAKE_FUNC(int, OP_cipher_decrypt_init, (void *vctx, + const unsigned char *key, + const unsigned char *iv)) +OSSL_CORE_MAKE_FUNC(int, OP_cipher_update, + (void *, unsigned char *out, size_t *outl, + const unsigned char *in, size_t inl)) +OSSL_CORE_MAKE_FUNC(int, OP_cipher_final, + (void *, unsigned ch |