aboutsummaryrefslogtreecommitdiffstats
path: root/package/libs/openssl/patches/250-eng_devcrypto-fix-ctr-mode.patch
diff options
context:
space:
mode:
Diffstat (limited to 'package/libs/openssl/patches/250-eng_devcrypto-fix-ctr-mode.patch')
-rw-r--r--package/libs/openssl/patches/250-eng_devcrypto-fix-ctr-mode.patch217
1 files changed, 0 insertions, 217 deletions
diff --git a/package/libs/openssl/patches/250-eng_devcrypto-fix-ctr-mode.patch b/package/libs/openssl/patches/250-eng_devcrypto-fix-ctr-mode.patch
deleted file mode 100644
index 54a9236f13..0000000000
--- a/package/libs/openssl/patches/250-eng_devcrypto-fix-ctr-mode.patch
+++ /dev/null
@@ -1,217 +0,0 @@
-From 2887a5c8f9a385b3ebee12b98f68e7d1f9cc0ea0 Mon Sep 17 00:00:00 2001
-From: Eneas U de Queiroz <cote2004-github@yahoo.com>
-Date: Wed, 28 Nov 2018 11:26:27 -0200
-Subject: [PATCH 6/7] eng_devcrypto: fix ctr mode
-
-Make CTR mode behave like a stream cipher.
-
-Signed-off-by: Eneas U de Queiroz <cote2004-github@yahoo.com>
-
-Reviewed-by: Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com>
-Reviewed-by: Richard Levitte <levitte@openssl.org>
-(Merged from https://github.com/openssl/openssl/pull/7585)
-
-(cherry picked from commit b5015e834aa7d3f0a5d7585a8fae05cecbdbb848)
-
---- a/crypto/engine/eng_devcrypto.c
-+++ b/crypto/engine/eng_devcrypto.c
-@@ -47,10 +47,12 @@ static int cfd;
-
- struct cipher_ctx {
- struct session_op sess;
--
-- /* to pass from init to do_cipher */
-- const unsigned char *iv;
- int op; /* COP_ENCRYPT or COP_DECRYPT */
-+ unsigned long mode; /* EVP_CIPH_*_MODE */
-+
-+ /* to handle ctr mode being a stream cipher */
-+ unsigned char partial[EVP_MAX_BLOCK_LENGTH];
-+ unsigned int blocksize, num;
- };
-
- static const struct cipher_data_st {
-@@ -87,9 +89,9 @@ static const struct cipher_data_st {
- { NID_aes_256_xts, 16, 256 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
- #endif
- #if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_ECB)
-- { NID_aes_128_ecb, 16, 128 / 8, 16, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
-- { NID_aes_192_ecb, 16, 192 / 8, 16, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
-- { NID_aes_256_ecb, 16, 256 / 8, 16, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
-+ { NID_aes_128_ecb, 16, 128 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
-+ { NID_aes_192_ecb, 16, 192 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
-+ { NID_aes_256_ecb, 16, 256 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
- #endif
- #if 0 /* Not yet supported */
- { NID_aes_128_gcm, 16, 128 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
-@@ -146,6 +148,8 @@ static int cipher_init(EVP_CIPHER_CTX *c
- cipher_ctx->sess.keylen = cipher_d->keylen;
- cipher_ctx->sess.key = (void *)key;
- cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT;
-+ cipher_ctx->mode = cipher_d->flags & EVP_CIPH_MODE;
-+ cipher_ctx->blocksize = cipher_d->blocksize;
- if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
- SYSerr(SYS_F_IOCTL, errno);
- return 0;
-@@ -160,8 +164,11 @@ static int cipher_do_cipher(EVP_CIPHER_C
- struct cipher_ctx *cipher_ctx =
- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
- struct crypt_op cryp;
-+ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
- #if !defined(COP_FLAG_WRITE_IV)
- unsigned char saved_iv[EVP_MAX_IV_LENGTH];
-+ const unsigned char *ivptr;
-+ size_t nblocks, ivlen;
- #endif
-
- memset(&cryp, 0, sizeof(cryp));
-@@ -169,19 +176,28 @@ static int cipher_do_cipher(EVP_CIPHER_C
- cryp.len = inl;
- cryp.src = (void *)in;
- cryp.dst = (void *)out;
-- cryp.iv = (void *)EVP_CIPHER_CTX_iv_noconst(ctx);
-+ cryp.iv = (void *)iv;
- cryp.op = cipher_ctx->op;
- #if !defined(COP_FLAG_WRITE_IV)
- cryp.flags = 0;
-
-- if (EVP_CIPHER_CTX_iv_length(ctx) > 0) {
-- assert(inl >= EVP_CIPHER_CTX_iv_length(ctx));
-- if (!EVP_CIPHER_CTX_encrypting(ctx)) {
-- unsigned char *ivptr = in + inl - EVP_CIPHER_CTX_iv_length(ctx);
-+ ivlen = EVP_CIPHER_CTX_iv_length(ctx);
-+ if (ivlen > 0)
-+ switch (cipher_ctx->mode) {
-+ case EVP_CIPH_CBC_MODE:
-+ assert(inl >= ivlen);
-+ if (!EVP_CIPHER_CTX_encrypting(ctx)) {
-+ ivptr = in + inl - ivlen;
-+ memcpy(saved_iv, ivptr, ivlen);
-+ }
-+ break;
-+
-+ case EVP_CIPH_CTR_MODE:
-+ break;
-
-- memcpy(saved_iv, ivptr, EVP_CIPHER_CTX_iv_length(ctx));
-+ default: /* should not happen */
-+ return 0;
- }
-- }
- #else
- cryp.flags = COP_FLAG_WRITE_IV;
- #endif
-@@ -192,17 +208,74 @@ static int cipher_do_cipher(EVP_CIPHER_C
- }
-
- #if !defined(COP_FLAG_WRITE_IV)
-- if (EVP_CIPHER_CTX_iv_length(ctx) > 0) {
-- unsigned char *ivptr = saved_iv;
-+ if (ivlen > 0)
-+ switch (cipher_ctx->mode) {
-+ case EVP_CIPH_CBC_MODE:
-+ assert(inl >= ivlen);
-+ if (EVP_CIPHER_CTX_encrypting(ctx))
-+ ivptr = out + inl - ivlen;
-+ else
-+ ivptr = saved_iv;
-+
-+ memcpy(iv, ivptr, ivlen);
-+ break;
-+
-+ case EVP_CIPH_CTR_MODE:
-+ nblocks = (inl + cipher_ctx->blocksize - 1)
-+ / cipher_ctx->blocksize;
-+ do {
-+ ivlen--;
-+ nblocks += iv[ivlen];
-+ iv[ivlen] = (uint8_t) nblocks;
-+ nblocks >>= 8;
-+ } while (ivlen);
-+ break;
-+
-+ default: /* should not happen */
-+ return 0;
-+ }
-+#endif
-+
-+ return 1;
-+}
-
-- assert(inl >= EVP_CIPHER_CTX_iv_length(ctx));
-- if (!EVP_CIPHER_CTX_encrypting(ctx))
-- ivptr = out + inl - EVP_CIPHER_CTX_iv_length(ctx);
-+static int ctr_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-+ const unsigned char *in, size_t inl)
-+{
-+ struct cipher_ctx *cipher_ctx =
-+ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
-+ size_t nblocks, len;
-
-- memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), ivptr,
-- EVP_CIPHER_CTX_iv_length(ctx));
-+ /* initial partial block */
-+ while (cipher_ctx->num && inl) {
-+ (*out++) = *(in++) ^ cipher_ctx->partial[cipher_ctx->num];
-+ --inl;
-+ cipher_ctx->num = (cipher_ctx->num + 1) % cipher_ctx->blocksize;
-+ }
-+
-+ /* full blocks */
-+ if (inl > (unsigned int) cipher_ctx->blocksize) {
-+ nblocks = inl/cipher_ctx->blocksize;
-+ len = nblocks * cipher_ctx->blocksize;
-+ if (cipher_do_cipher(ctx, out, in, len) < 1)
-+ return 0;
-+ inl -= len;
-+ out += len;
-+ in += len;
-+ }
-+
-+ /* final partial block */
-+ if (inl) {
-+ memset(cipher_ctx->partial, 0, cipher_ctx->blocksize);
-+ if (cipher_do_cipher(ctx, cipher_ctx->partial, cipher_ctx->partial,
-+ cipher_ctx->blocksize) < 1)
-+ return 0;
-+ while (inl--) {
-+ out[cipher_ctx->num] = in[cipher_ctx->num]
-+ ^ cipher_ctx->partial[cipher_ctx->num];
-+ cipher_ctx->num++;
-+ }
- }
--#endif
-
- return 1;
- }
-@@ -249,6 +322,7 @@ static void prepare_cipher_methods(void)
- {
- size_t i;
- struct session_op sess;
-+ unsigned long cipher_mode;
-
- memset(&sess, 0, sizeof(sess));
- sess.key = (void *)"01234567890123456789012345678901234567890123456789";
-@@ -266,9 +340,12 @@ static void prepare_cipher_methods(void)
- || ioctl(cfd, CIOCFSESSION, &sess.ses) < 0)
- continue;
-
-+ cipher_mode = cipher_data[i].flags & EVP_CIPH_MODE;
-+
- if ((known_cipher_methods[i] =
- EVP_CIPHER_meth_new(cipher_data[i].nid,
-- cipher_data[i].blocksize,
-+ cipher_mode == EVP_CIPH_CTR_MODE ? 1 :
-+ cipher_data[i].blocksize,
- cipher_data[i].keylen)) == NULL
- || !EVP_CIPHER_meth_set_iv_length(known_cipher_methods[i],
- cipher_data[i].ivlen)
-@@ -278,6 +355,8 @@ static void prepare_cipher_methods(void)
- | EVP_CIPH_FLAG_DEFAULT_ASN1)
- || !EVP_CIPHER_meth_set_init(known_cipher_methods[i], cipher_init)
- || !EVP_CIPHER_meth_set_do_cipher(known_cipher_methods[i],
-+ cipher_mode == EVP_CIPH_CTR_MODE ?
-+ ctr_do_cipher :
- cipher_do_cipher)
- || !EVP_CIPHER_meth_set_ctrl(known_cipher_methods[i], cipher_ctrl)
- || !EVP_CIPHER_meth_set_cleanup(known_cipher_methods[i],
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 17:14:48 +0000