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path: root/Cryptlib/OpenSSL/crypto/kdf/tls1_prf.c
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Diffstat (limited to 'Cryptlib/OpenSSL/crypto/kdf/tls1_prf.c')
-rw-r--r--Cryptlib/OpenSSL/crypto/kdf/tls1_prf.c265
1 files changed, 0 insertions, 265 deletions
diff --git a/Cryptlib/OpenSSL/crypto/kdf/tls1_prf.c b/Cryptlib/OpenSSL/crypto/kdf/tls1_prf.c
deleted file mode 100644
index fa13732b..00000000
--- a/Cryptlib/OpenSSL/crypto/kdf/tls1_prf.c
+++ /dev/null
@@ -1,265 +0,0 @@
-/*
- * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
- *
- * Licensed under the OpenSSL license (the "License"). You may not use
- * this file except in compliance with the License. You can obtain a copy
- * in the file LICENSE in the source distribution or at
- * https://www.openssl.org/source/license.html
- */
-
-#include <stdio.h>
-#include "internal/cryptlib.h"
-#include <openssl/kdf.h>
-#include <openssl/evp.h>
-#include "internal/evp_int.h"
-
-static int tls1_prf_alg(const EVP_MD *md,
- const unsigned char *sec, size_t slen,
- const unsigned char *seed, size_t seed_len,
- unsigned char *out, size_t olen);
-
-#define TLS1_PRF_MAXBUF 1024
-
-/* TLS KDF pkey context structure */
-
-typedef struct {
- /* Digest to use for PRF */
- const EVP_MD *md;
- /* Secret value to use for PRF */
- unsigned char *sec;
- size_t seclen;
- /* Buffer of concatenated seed data */
- unsigned char seed[TLS1_PRF_MAXBUF];
- size_t seedlen;
-} TLS1_PRF_PKEY_CTX;
-
-static int pkey_tls1_prf_init(EVP_PKEY_CTX *ctx)
-{
- TLS1_PRF_PKEY_CTX *kctx;
-
- kctx = OPENSSL_zalloc(sizeof(*kctx));
- if (kctx == NULL)
- return 0;
- ctx->data = kctx;
-
- return 1;
-}
-
-static void pkey_tls1_prf_cleanup(EVP_PKEY_CTX *ctx)
-{
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
- OPENSSL_clear_free(kctx->sec, kctx->seclen);
- OPENSSL_cleanse(kctx->seed, kctx->seedlen);
- OPENSSL_free(kctx);
-}
-
-static int pkey_tls1_prf_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
-{
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
- switch (type) {
- case EVP_PKEY_CTRL_TLS_MD:
- kctx->md = p2;
- return 1;
-
- case EVP_PKEY_CTRL_TLS_SECRET:
- if (p1 < 0)
- return 0;
- if (kctx->sec != NULL)
- OPENSSL_clear_free(kctx->sec, kctx->seclen);
- OPENSSL_cleanse(kctx->seed, kctx->seedlen);
- kctx->seedlen = 0;
- kctx->sec = OPENSSL_memdup(p2, p1);
- if (kctx->sec == NULL)
- return 0;
- kctx->seclen = p1;
- return 1;
-
- case EVP_PKEY_CTRL_TLS_SEED:
- if (p1 == 0 || p2 == NULL)
- return 1;
- if (p1 < 0 || p1 > (int)(TLS1_PRF_MAXBUF - kctx->seedlen))
- return 0;
- memcpy(kctx->seed + kctx->seedlen, p2, p1);
- kctx->seedlen += p1;
- return 1;
-
- default:
- return -2;
-
- }
-}
-
-static int pkey_tls1_prf_ctrl_str(EVP_PKEY_CTX *ctx,
- const char *type, const char *value)
-{
- if (value == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_CTRL_STR, KDF_R_VALUE_MISSING);
- return 0;
- }
- if (strcmp(type, "md") == 0) {
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
-
- const EVP_MD *md = EVP_get_digestbyname(value);
- if (md == NULL) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_CTRL_STR, KDF_R_INVALID_DIGEST);
- return 0;
- }
- kctx->md = md;
- return 1;
- }
- if (strcmp(type, "secret") == 0)
- return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_TLS_SECRET, value);
- if (strcmp(type, "hexsecret") == 0)
- return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_TLS_SECRET, value);
- if (strcmp(type, "seed") == 0)
- return EVP_PKEY_CTX_str2ctrl(ctx, EVP_PKEY_CTRL_TLS_SEED, value);
- if (strcmp(type, "hexseed") == 0)
- return EVP_PKEY_CTX_hex2ctrl(ctx, EVP_PKEY_CTRL_TLS_SEED, value);
- return -2;
-}
-
-static int pkey_tls1_prf_derive(EVP_PKEY_CTX *ctx, unsigned char *key,
- size_t *keylen)
-{
- TLS1_PRF_PKEY_CTX *kctx = ctx->data;
- if (kctx->md == NULL || kctx->sec == NULL || kctx->seedlen == 0) {
- KDFerr(KDF_F_PKEY_TLS1_PRF_DERIVE, KDF_R_MISSING_PARAMETER);
- return 0;
- }
- return tls1_prf_alg(kctx->md, kctx->sec, kctx->seclen,
- kctx->seed, kctx->seedlen,
- key, *keylen);
-}
-
-const EVP_PKEY_METHOD tls1_prf_pkey_meth = {
- EVP_PKEY_TLS1_PRF,
- 0,
- pkey_tls1_prf_init,
- 0,
- pkey_tls1_prf_cleanup,
-
- 0, 0,
- 0, 0,
-
- 0,
- 0,
-
- 0,
- 0,
-
- 0, 0,
-
- 0, 0, 0, 0,
-
- 0, 0,
-
- 0, 0,
-
- 0,
- pkey_tls1_prf_derive,
- pkey_tls1_prf_ctrl,
- pkey_tls1_prf_ctrl_str
-};
-
-static int tls1_prf_P_hash(const EVP_MD *md,
- const unsigned char *sec, size_t sec_len,
- const unsigned char *seed, size_t seed_len,
- unsigned char *out, size_t olen)
-{
- int chunk;
- EVP_MD_CTX *ctx = NULL, *ctx_tmp = NULL, *ctx_init = NULL;
- EVP_PKEY *mac_key = NULL;
- unsigned char A1[EVP_MAX_MD_SIZE];
- size_t A1_len;
- int ret = 0;
-
- chunk = EVP_MD_size(md);
- OPENSSL_assert(chunk >= 0);
-
- ctx = EVP_MD_CTX_new();
- ctx_tmp = EVP_MD_CTX_new();
- ctx_init = EVP_MD_CTX_new();
- if (ctx == NULL || ctx_tmp == NULL || ctx_init == NULL)
- goto err;
- EVP_MD_CTX_set_flags(ctx_init, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
- mac_key = EVP_PKEY_new_mac_key(EVP_PKEY_HMAC, NULL, sec, sec_len);
- if (mac_key == NULL)
- goto err;
- if (!EVP_DigestSignInit(ctx_init, NULL, md, NULL, mac_key))
- goto err;
- if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
- goto err;
- if (seed != NULL && !EVP_DigestSignUpdate(ctx, seed, seed_len))
- goto err;
- if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
- goto err;
-
- for (;;) {
- /* Reinit mac contexts */
- if (!EVP_MD_CTX_copy_ex(ctx, ctx_init))
- goto err;
- if (!EVP_DigestSignUpdate(ctx, A1, A1_len))
- goto err;
- if (olen > (size_t)chunk && !EVP_MD_CTX_copy_ex(ctx_tmp, ctx))
- goto err;
- if (seed && !EVP_DigestSignUpdate(ctx, seed, seed_len))
- goto err;
-
- if (olen > (size_t)chunk) {
- size_t mac_len;
- if (!EVP_DigestSignFinal(ctx, out, &mac_len))
- goto err;
- out += mac_len;
- olen -= mac_len;
- /* calc the next A1 value */
- if (!EVP_DigestSignFinal(ctx_tmp, A1, &A1_len))
- goto err;
- } else { /* last one */
-
- if (!EVP_DigestSignFinal(ctx, A1, &A1_len))
- goto err;
- memcpy(out, A1, olen);
- break;
- }
- }
- ret = 1;
- err:
- EVP_PKEY_free(mac_key);
- EVP_MD_CTX_free(ctx);
- EVP_MD_CTX_free(ctx_tmp);
- EVP_MD_CTX_free(ctx_init);
- OPENSSL_cleanse(A1, sizeof(A1));
- return ret;
-}
-
-static int tls1_prf_alg(const EVP_MD *md,
- const unsigned char *sec, size_t slen,
- const unsigned char *seed, size_t seed_len,
- unsigned char *out, size_t olen)
-{
-
- if (EVP_MD_type(md) == NID_md5_sha1) {
- size_t i;
- unsigned char *tmp;
- if (!tls1_prf_P_hash(EVP_md5(), sec, slen/2 + (slen & 1),
- seed, seed_len, out, olen))
- return 0;
-
- tmp = OPENSSL_malloc(olen);
- if (tmp == NULL)
- return 0;
- if (!tls1_prf_P_hash(EVP_sha1(), sec + slen/2, slen/2 + (slen & 1),
- seed, seed_len, tmp, olen)) {
- OPENSSL_clear_free(tmp, olen);
- return 0;
- }
- for (i = 0; i < olen; i++)
- out[i] ^= tmp[i];
- OPENSSL_clear_free(tmp, olen);
- return 1;
- }
- if (!tls1_prf_P_hash(md, sec, slen, seed, seed_len, out, olen))
- return 0;
-
- return 1;
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-30 09:21:24 +0000