Harmonise use of EVP_CTRL_GET_TAG/EVP_CTRL_SET_TAG/EVP_CTRL_SET_IVLEN (e640fa02) · Commits · CYBER - Cyber Security / TS 103 523 MSP / ETS / ETS OpenSSL

crypto/evp/e_aes.c

+9 −9

Original line number	Diff line number	Diff line
		@@ -1271,7 +1271,7 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		gctx->tls_aad_len = -1;
		return 1;

		case EVP_CTRL_GCM_SET_IVLEN:
		case EVP_CTRL_AEAD_SET_IVLEN:
		if (arg <= 0)
		return 0;
		/* Allocate memory for IV if needed */
		@@ -1285,14 +1285,14 @@ static int aes_gcm_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		gctx->ivlen = arg;
		return 1;

		case EVP_CTRL_GCM_SET_TAG:
		case EVP_CTRL_AEAD_SET_TAG:
		if (arg <= 0 \|\| arg > 16 \|\| c->encrypt)
		return 0;
		memcpy(c->buf, ptr, arg);
		gctx->taglen = arg;
		return 1;

		case EVP_CTRL_GCM_GET_TAG:
		case EVP_CTRL_AEAD_GET_TAG:
		if (arg <= 0 \|\| arg > 16 \|\| !c->encrypt \|\| gctx->taglen < 0)
		return 0;
		memcpy(ptr, c->buf, arg);
		@@ -1870,7 +1870,7 @@ static int aes_ccm_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		cctx->len_set = 0;
		return 1;

		case EVP_CTRL_CCM_SET_IVLEN:
		case EVP_CTRL_AEAD_SET_IVLEN:
		arg = 15 - arg;
		case EVP_CTRL_CCM_SET_L:
		if (arg < 2 \|\| arg > 8)
		@@ -1878,7 +1878,7 @@ static int aes_ccm_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		cctx->L = arg;
		return 1;

		case EVP_CTRL_CCM_SET_TAG:
		case EVP_CTRL_AEAD_SET_TAG:
		if ((arg & 1) \|\| arg < 4 \|\| arg > 16)
		return 0;
		if ((c->encrypt && ptr) \|\| (!c->encrypt && !ptr))
		@@ -1890,7 +1890,7 @@ static int aes_ccm_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		cctx->M = arg;
		return 1;

		case EVP_CTRL_CCM_GET_TAG:
		case EVP_CTRL_AEAD_GET_TAG:
		if (!c->encrypt \|\| !cctx->tag_set)
		return 0;
		if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
		@@ -2217,7 +2217,7 @@ static int aes_ocb_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		octx->aad_buf_len = 0;
		return 1;

		case EVP_CTRL_SET_IVLEN:
		case EVP_CTRL_AEAD_SET_IVLEN:
		/* IV len must be 1 to 15 */
		if (arg <= 0 \|\| arg > 15)
		return 0;
		@@ -2225,7 +2225,7 @@ static int aes_ocb_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		octx->ivlen = arg;
		return 1;

		case EVP_CTRL_SET_TAG:
		case EVP_CTRL_AEAD_SET_TAG:
		if (!ptr) {
		/* Tag len must be 0 to 16 */
		if (arg < 0 \|\| arg > 16)
		@@ -2239,7 +2239,7 @@ static int aes_ocb_ctrl(EVP_CIPHER_CTX c, int type, int arg, void ptr)
		memcpy(octx->tag, ptr, arg);
		return 1;

		case EVP_CTRL_GET_TAG:
		case EVP_CTRL_AEAD_GET_TAG:
		if (arg != octx->taglen \|\| !c->encrypt)
		return 0;

crypto/evp/evp.h

+9 −10

Original line number	Diff line number	Diff line
		@@ -397,14 +397,17 @@ struct evp_cipher_st {
		# define EVP_CTRL_RAND_KEY 0x6
		# define EVP_CTRL_PBE_PRF_NID 0x7
		# define EVP_CTRL_COPY 0x8
		# define EVP_CTRL_GCM_SET_IVLEN 0x9
		# define EVP_CTRL_GCM_GET_TAG 0x10
		# define EVP_CTRL_GCM_SET_TAG 0x11
		# define EVP_CTRL_AEAD_SET_IVLEN 0x9
		# define EVP_CTRL_AEAD_GET_TAG 0x10
		# define EVP_CTRL_AEAD_SET_TAG 0x11
		# define EVP_CTRL_GCM_SET_IVLEN EVP_CTRL_AEAD_SET_IVLEN
		# define EVP_CTRL_GCM_GET_TAG EVP_CTRL_AEAD_GET_TAG
		# define EVP_CTRL_GCM_SET_TAG EVP_CTRL_AEAD_SET_TAG
		# define EVP_CTRL_GCM_SET_IV_FIXED 0x12
		# define EVP_CTRL_GCM_IV_GEN 0x13
		# define EVP_CTRL_CCM_SET_IVLEN EVP_CTRL_GCM_SET_IVLEN
		# define EVP_CTRL_CCM_GET_TAG EVP_CTRL_GCM_GET_TAG
		# define EVP_CTRL_CCM_SET_TAG EVP_CTRL_GCM_SET_TAG
		# define EVP_CTRL_CCM_SET_IVLEN EVP_CTRL_AEAD_SET_IVLEN
		# define EVP_CTRL_CCM_GET_TAG EVP_CTRL_AEAD_GET_TAG
		# define EVP_CTRL_CCM_SET_TAG EVP_CTRL_AEAD_SET_TAG
		# define EVP_CTRL_CCM_SET_L 0x14
		# define EVP_CTRL_CCM_SET_MSGLEN 0x15
		/*
		@@ -430,10 +433,6 @@ typedef struct {
		unsigned int interleave;
		} EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM;

		# define EVP_CTRL_SET_IVLEN EVP_CTRL_GCM_SET_IVLEN
		# define EVP_CTRL_GET_TAG EVP_CTRL_GCM_GET_TAG
		# define EVP_CTRL_SET_TAG EVP_CTRL_GCM_SET_TAG

		/* GCM TLS constants */
		/* Length of fixed part of IV derived from PRF */
		# define EVP_GCM_TLS_FIXED_IV_LEN 4

crypto/evp/evp_test.c

+11 −10

Original line number	Diff line number	Diff line
		@@ -179,13 +179,13 @@ static void test1(const EVP_CIPHER c, const unsigned char key, int kn,
		ERR_print_errors_fp(stderr);
		test1_exit(10);
		}
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_IVLEN, in, NULL)) {
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, in, NULL)) {
		fprintf(stderr, "IV length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(11);
		}
		if ((mode == EVP_CIPH_OCB_MODE) &&
		!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_TAG, tn, NULL)) {
		!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, tn, NULL)) {
		fprintf(stderr, "Tag length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(15);
		@@ -206,12 +206,12 @@ static void test1(const EVP_CIPHER c, const unsigned char key, int kn,
		ERR_print_errors_fp(stderr);
		test1_exit(10);
		}
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, in, NULL)) {
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_IVLEN, in, NULL)) {
		fprintf(stderr, "IV length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(11);
		}
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, tn, NULL)) {
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_TAG, tn, NULL)) {
		fprintf(stderr, "Tag length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(11);
		@@ -273,7 +273,7 @@ static void test1(const EVP_CIPHER c, const unsigned char key, int kn,
		\|\| (mode == EVP_CIPH_CCM_MODE)) {
		unsigned char rtag[16];

		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GET_TAG, tn, rtag)) {
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, tn, rtag)) {
		fprintf(stderr, "Get tag failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(14);
		@@ -294,13 +294,13 @@ static void test1(const EVP_CIPHER c, const unsigned char key, int kn,
		ERR_print_errors_fp(stderr);
		test1_exit(10);
		}
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_IVLEN, in, NULL)) {
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, in, NULL)) {
		fprintf(stderr, "IV length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(11);
		}
		if ((mode == EVP_CIPH_OCB_MODE) &&
		!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_TAG, tn, NULL)) {
		!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, tn, NULL)) {
		fprintf(stderr, "Tag length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(15);
		@@ -310,7 +310,8 @@ static void test1(const EVP_CIPHER c, const unsigned char key, int kn,
		ERR_print_errors_fp(stderr);
		test1_exit(12);
		}
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_SET_TAG, tn, (void *)tag)) {
		if (!EVP_CIPHER_CTX_ctrl
		(ctx, EVP_CTRL_AEAD_SET_TAG, tn, (void *)tag)) {
		fprintf(stderr, "Set tag failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(14);
		@@ -326,13 +327,13 @@ static void test1(const EVP_CIPHER c, const unsigned char key, int kn,
		ERR_print_errors_fp(stderr);
		test1_exit(10);
		}
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, in, NULL)) {
		if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, in, NULL)) {
		fprintf(stderr, "IV length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(11);
		}
		if (!EVP_CIPHER_CTX_ctrl
		(ctx, EVP_CTRL_CCM_SET_TAG, tn, (void *)tag)) {
		(ctx, EVP_CTRL_AEAD_SET_TAG, tn, (void *)tag)) {
		fprintf(stderr, "Tag length set failed\n");
		ERR_print_errors_fp(stderr);
		test1_exit(11);

demos/evp/aesccm.c

+7 −5

Original line number	Diff line number	Diff line
		@@ -50,9 +50,10 @@ void aes_ccm_encrypt(void)
		/* Set cipher type and mode */
		EVP_EncryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL);
		/* Set nonce length if default 96 bits is not appropriate */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, sizeof(ccm_nonce), NULL);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(ccm_nonce),
		NULL);
		/* Set tag length */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG, sizeof(ccm_tag), NULL);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(ccm_tag), NULL);
		/* Initialise key and IV */
		EVP_EncryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce);
		/* Set plaintext length: only needed if AAD is used */
		@@ -67,7 +68,7 @@ void aes_ccm_encrypt(void)
		/* Finalise: note get no output for CCM */
		EVP_EncryptFinal_ex(ctx, outbuf, &outlen);
		/* Get tag */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_GET_TAG, 16, outbuf);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, outbuf);
		/* Output tag */
		printf("Tag:\n");
		BIO_dump_fp(stdout, outbuf, 16);
		@@ -86,9 +87,10 @@ void aes_ccm_decrypt(void)
		/* Select cipher */
		EVP_DecryptInit_ex(ctx, EVP_aes_192_ccm(), NULL, NULL, NULL);
		/* Set nonce length, omit for 96 bits */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_IVLEN, sizeof(ccm_nonce), NULL);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(ccm_nonce),
		NULL);
		/* Set expected tag value */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_CCM_SET_TAG,
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG,
		sizeof(ccm_tag), (void *)ccm_tag);
		/* Specify key and IV */
		EVP_DecryptInit_ex(ctx, NULL, NULL, ccm_key, ccm_nonce);

demos/evp/aesgcm.c

+9 −6

Original line number	Diff line number	Diff line
		@@ -50,7 +50,7 @@ void aes_gcm_encrypt(void)
		/* Set cipher type and mode */
		EVP_EncryptInit_ex(ctx, EVP_aes_256_gcm(), NULL, NULL, NULL);
		/* Set IV length if default 96 bits is not appropriate */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, sizeof(gcm_iv), NULL);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(gcm_iv), NULL);
		/* Initialise key and IV */
		EVP_EncryptInit_ex(ctx, NULL, NULL, gcm_key, gcm_iv);
		/* Zero or more calls to specify any AAD */
		@@ -63,7 +63,7 @@ void aes_gcm_encrypt(void)
		/* Finalise: note get no output for GCM */
		EVP_EncryptFinal_ex(ctx, outbuf, &outlen);
		/* Get tag */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_GET_TAG, 16, outbuf);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_GET_TAG, 16, outbuf);
		/* Output tag */
		printf("Tag:\n");
		BIO_dump_fp(stdout, outbuf, 16);
		@@ -82,7 +82,7 @@ void aes_gcm_decrypt(void)
		/* Select cipher */
		EVP_DecryptInit_ex(ctx, EVP_aes_256_gcm(), NULL, NULL, NULL);
		/* Set IV length, omit for 96 bits */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_IVLEN, sizeof(gcm_iv), NULL);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_IVLEN, sizeof(gcm_iv), NULL);
		/* Specify key and IV */
		EVP_DecryptInit_ex(ctx, NULL, NULL, gcm_key, gcm_iv);
		#if 0
		@@ -90,7 +90,7 @@ void aes_gcm_decrypt(void)
		* Set expected tag value. A restriction in OpenSSL 1.0.1c and earlier
		* required the tag before any AAD or ciphertext
		*/
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, sizeof(gcm_tag), gcm_tag);
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag), gcm_tag);
		#endif
		/* Zero or more calls to specify any AAD */
		EVP_DecryptUpdate(ctx, NULL, &outlen, gcm_aad, sizeof(gcm_aad));
		@@ -99,8 +99,11 @@ void aes_gcm_decrypt(void)
		/* Output decrypted block */
		printf("Plaintext:\n");
		BIO_dump_fp(stdout, outbuf, outlen);
		/* Set expected tag value. Works in OpenSSL 1.0.1d and later */
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, sizeof(gcm_tag), gcm_tag);
		/*
		* Set expected tag value. Works in OpenSSL 1.0.1d and later
		* In versions prior to OpenSSL 1.1.0 you should use EVP_CTRL_GCM_SET_TAG
		*/
		EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag), gcm_tag);
		/* Finalise: note get no output for GCM */
		rv = EVP_DecryptFinal_ex(ctx, outbuf, &outlen);
		/*

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