/*
- * Copyright 2019-2020 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
/* For SSL3_VERSION */
#include <openssl/ssl.h>
+#include <openssl/proverr.h>
#include "ciphercommon_local.h"
#include "prov/provider_ctx.h"
#include "prov/providercommon.h"
-#include "prov/providercommonerr.h"
/*-
* Generic cipher functions for OSSL_PARAM gettables and settables
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_BLOCK_SIZE, NULL),
- OSSL_PARAM_ulong(OSSL_CIPHER_PARAM_FLAGS, NULL),
+ OSSL_PARAM_int(OSSL_CIPHER_PARAM_AEAD, NULL),
+ OSSL_PARAM_int(OSSL_CIPHER_PARAM_CUSTOM_IV, NULL),
+ OSSL_PARAM_int(OSSL_CIPHER_PARAM_CTS, NULL),
+ OSSL_PARAM_int(OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK, NULL),
{ OSSL_CIPHER_PARAM_TLS_MAC, OSSL_PARAM_OCTET_PTR, NULL, 0, OSSL_PARAM_UNMODIFIED },
OSSL_PARAM_END
};
-const OSSL_PARAM *ossl_cipher_generic_gettable_params(void *provctx)
+const OSSL_PARAM *ossl_cipher_generic_gettable_params(ossl_unused void *provctx)
{
return cipher_known_gettable_params;
}
int ossl_cipher_generic_get_params(OSSL_PARAM params[], unsigned int md,
- unsigned long flags,
+ uint64_t flags,
size_t kbits, size_t blkbits, size_t ivbits)
{
OSSL_PARAM *p;
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
- p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_FLAGS);
- if (p != NULL && !OSSL_PARAM_set_ulong(p, flags)) {
+ p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD);
+ if (p != NULL
+ && !OSSL_PARAM_set_int(p, (flags & PROV_CIPHER_FLAG_AEAD) != 0)) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
+ return 0;
+ }
+ p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_CUSTOM_IV);
+ if (p != NULL
+ && !OSSL_PARAM_set_int(p, (flags & PROV_CIPHER_FLAG_CUSTOM_IV) != 0)) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
+ return 0;
+ }
+ p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_CTS);
+ if (p != NULL
+ && !OSSL_PARAM_set_int(p, (flags & PROV_CIPHER_FLAG_CTS) != 0)) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
+ return 0;
+ }
+ p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_TLS1_MULTIBLOCK);
+ if (p != NULL
+ && !OSSL_PARAM_set_int(p, (flags & PROV_CIPHER_FLAG_TLS1_MULTIBLOCK) != 0)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
/*
* Variable key length cipher functions for OSSL_PARAM settables
*/
-
int ossl_cipher_var_keylen_set_ctx_params(void *vctx, const OSSL_PARAM params[])
{
PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TAGLEN, NULL),
OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_IV, NULL, 0),
- OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_IV_STATE, NULL, 0),
+ OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_UPDATED_IV, NULL, 0),
OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TAG, NULL, 0),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, NULL),
OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_GET_IV_GEN, NULL, 0),
OSSL_PARAM_END
};
const OSSL_PARAM *ossl_cipher_aead_gettable_ctx_params(
- ossl_unused void *provctx
+ ossl_unused void *cctx, ossl_unused void *provctx
)
{
return cipher_aead_known_gettable_ctx_params;
OSSL_PARAM_END
};
const OSSL_PARAM *ossl_cipher_aead_settable_ctx_params(
- ossl_unused void *provctx
+ ossl_unused void *cctx, ossl_unused void *provctx
)
{
return cipher_aead_known_settable_ctx_params;
return 0;
}
if (key != NULL) {
- if ((ctx->flags & EVP_CIPH_VARIABLE_LENGTH) == 0) {
+ if (ctx->variable_keylength == 0) {
if (keylen != ctx->keylen) {
- ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
+ ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
return 0;
}
} else {
/* This only fails if padding is publicly invalid */
*outl = inl;
if (!ctx->enc
- && !tlsunpadblock(ctx->libctx, ctx->tlsversion, out, outl,
- blksz, &ctx->tlsmac, &ctx->alloced,
- ctx->tlsmacsize, 0)) {
+ && !ossl_cipher_tlsunpadblock(ctx->libctx, ctx->tlsversion,
+ out, outl,
+ blksz, &ctx->tlsmac, &ctx->alloced,
+ ctx->tlsmacsize, 0)) {
ERR_raise(ERR_LIB_PROV, PROV_R_CIPHER_OPERATION_FAILED);
return 0;
}
}
if (ctx->bufsz != 0)
- nextblocks = fillblock(ctx->buf, &ctx->bufsz, blksz, &in, &inl);
+ nextblocks = ossl_cipher_fillblock(ctx->buf, &ctx->bufsz, blksz,
+ &in, &inl);
else
nextblocks = inl & ~(blksz-1);
in += nextblocks;
inl -= nextblocks;
}
- if (inl != 0 && !trailingdata(ctx->buf, &ctx->bufsz, blksz, &in, &inl)) {
+ if (inl != 0
+ && !ossl_cipher_trailingdata(ctx->buf, &ctx->bufsz, blksz, &in, &inl)) {
/* ERR_raise already called */
return 0;
}
if (ctx->enc) {
if (ctx->pad) {
- padblock(ctx->buf, &ctx->bufsz, blksz);
+ ossl_cipher_padblock(ctx->buf, &ctx->bufsz, blksz);
} else if (ctx->bufsz == 0) {
*outl = 0;
return 1;
return 0;
}
- if (ctx->pad && !unpadblock(ctx->buf, &ctx->bufsz, blksz)) {
+ if (ctx->pad && !ossl_cipher_unpadblock(ctx->buf, &ctx->bufsz, blksz)) {
/* ERR_raise already called */
return 0;
}
}
*outl = inl;
- /*
- * Remove any TLS padding. Only used by cipher_aes_cbc_hmac_sha1_hw.c and
- * cipher_aes_cbc_hmac_sha256_hw.c
- */
- if (!ctx->enc && ctx->removetlspad > 0) {
- /* The actual padding length */
- *outl -= out[inl - 1] + 1;
+ if (!ctx->enc && ctx->tlsversion > 0) {
+ /*
+ * Remove any TLS padding. Only used by cipher_aes_cbc_hmac_sha1_hw.c and
+ * cipher_aes_cbc_hmac_sha256_hw.c
+ */
+ if (ctx->removetlspad) {
+ /*
+ * We should have already failed in the cipher() call above if this
+ * isn't true.
+ */
+ if (!ossl_assert(*outl >= (size_t)(out[inl - 1] + 1)))
+ return 0;
+ /* The actual padding length */
+ *outl -= out[inl - 1] + 1;
+ }
- /* MAC and explicit IV */
- *outl -= ctx->removetlspad;
+ /* TLS MAC and explicit IV if relevant. We should have already failed
+ * in the cipher() call above if *outl is too short.
+ */
+ if (!ossl_assert(*outl >= ctx->removetlsfixed))
+ return 0;
+ *outl -= ctx->removetlsfixed;
+
+ /* Extract the MAC if there is one */
+ if (ctx->tlsmacsize > 0) {
+ if (*outl < ctx->tlsmacsize)
+ return 0;
+
+ ctx->tlsmac = out + *outl - ctx->tlsmacsize;
+ *outl -= ctx->tlsmacsize;
+ }
}
return 1;
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
- p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IV_STATE);
+ p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_UPDATED_IV);
if (p != NULL
&& !OSSL_PARAM_set_octet_ptr(p, &ctx->iv, ctx->ivlen)
&& !OSSL_PARAM_set_octet_string(p, &ctx->iv, ctx->ivlen)) {
{
if (ivlen != ctx->ivlen
|| ivlen > sizeof(ctx->iv)) {
- ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IVLEN);
+ ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
return 0;
}
ctx->iv_set = 1;
{
PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
- ctx->flags = flags;
+ if ((flags & PROV_CIPHER_FLAG_INVERSE_CIPHER) != 0)
+ ctx->inverse_cipher = 1;
+ if ((flags & PROV_CIPHER_FLAG_VARIABLE_LENGTH) != 0)
+ ctx->variable_keylength = 1;
+
ctx->pad = 1;
ctx->keylen = ((kbits) / 8);
ctx->ivlen = ((ivbits) / 8);
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