From fb3608b9455b3e0956e401e6254da13cebd71558 Mon Sep 17 00:00:00 2001 From: vnugent Date: Wed, 7 Aug 2024 21:39:11 -0400 Subject: Squashed commit of the following: commit ec7461dc3425b963b0768210a5f51d8eab770c86 Author: vnugent Date: Wed Aug 7 21:36:26 2024 -0400 update changelog commit f58245b0d249fc162feacc610eedf81656a481a3 Author: vnugent Date: Wed Aug 7 21:14:53 2024 -0400 feat: Add cipher mode mask and fix cc commit 7c8f910e5be9a1d86af5bdcb7e51e8092cc06cf6 Author: vnugent Date: Wed Aug 7 15:11:19 2024 -0400 feat: added NCEncryptionGetIvSize() function and helpers commit 4d76151802b4cc04fb89d47c35c2d876b395f1a4 Merge: 942aed8 6fdc4bc Author: vnugent Date: Tue Aug 6 20:56:55 2024 -0400 Merge branch 'master' into develop commit 942aed8a4e7c173a2c9423829c2b38087cbd49e4 Author: vnugent Date: Tue Aug 6 20:54:03 2024 -0400 chore: update changelog and mbedtls headers commit 3b97f84fd0477eafcd6567eb8597b213e4136664 Author: vnugent Date: Tue Aug 6 19:57:10 2024 -0400 update libsecp256k1 to v0.5.1 commit 7989a2660997b909e0b99fc1dfb3bcfbb0528df3 Author: vnugent Date: Tue Aug 6 19:42:25 2024 -0400 update openssl to 3.3.1 commit e949ae5aa1fd25d4d11fe31e30b7d82ae7778dc2 Author: vnugent Date: Mon Aug 5 18:01:03 2024 -0400 fix: Find and fix openssl encryption bug commit a60a3e1ca1d99d655c0cfc96e3952c371e8a8677 Author: vnugent Date: Sun Aug 4 15:27:06 2024 -0400 cleanup comments + return codes commit 2aa7f4b6cdb2e0e8990e7177476f4104fd2e2b17 Author: vnugent Date: Sat Jul 27 22:20:53 2024 -0400 fix codeberg url commit 1640f79776c6b291b49a39a6128c05888fc4153e Author: vnugent Date: Sat Jul 27 00:05:07 2024 -0400 fix: Potential overflow in nip44 padding calculation commit 07de078a3b5b7b0043d9f81bb5a9e750a3a0c7c1 Author: vnugent Date: Fri Jul 26 23:37:15 2024 -0400 refactor: Span invasion, checks and fix some evp api commit 54f520e4bfc0fe23e2719d44b09739aa8709451c Author: vnugent Date: Tue Jul 23 19:55:13 2024 -0400 latest changes commit 12feb33dba2061415d6f39fa59dec16fafcda2a0 Author: vnugent Date: Sun Jul 21 17:51:04 2024 -0400 Push latest changes, patches, and internal upgrades commit ffe42b6858f112a00405be4f0605ab1163063749 Author: vnugent Date: Sat Jul 13 22:13:13 2024 -0400 test: Add decryption test cases and fixes commit 5dfafbc5a9214587533ec8b1dae2a962118d3650 Author: vnugent Date: Fri Jul 12 22:14:00 2024 -0400 feat: add decryption functionality to public api commit 8df8c5aed4ac626171b451b5422c3b207e88000b Author: vnugent Date: Thu Jul 11 21:39:39 2024 -0400 feat: Update sidecar utils library commit 23fe6e8c8596333c2183f0f4389817087442c551 Author: vnugent Date: Fri Jul 5 00:03:48 2024 -0400 push latest utils and changes commit dc71f861df8929deee300368b88ef47d45560695 Author: vnugent Date: Mon Jul 1 15:05:34 2024 -0400 fix: #7 fix confusing inline functions commit 90166048046d2511f0bb74f8880180e82466d4c0 Author: vnugent Date: Tue Jun 18 21:22:37 2024 -0400 push pending changes commit 461dd71069d0c0250752ac1256160605c33a6243 Author: vnugent Date: Tue Jun 11 15:44:28 2024 -0400 feat!: #4 Close #4. Add public nip04 support to api commit a74f96251bcc81fb2c94fe75dd6f8043fd35fe0b Merge: 1c26ef8 51d0aff Author: vnugent Date: Wed May 29 13:37:00 2024 -0400 Merge branch 'master' into develop commit 1c26ef86a04690120f4f752c7c5018a570ec5880 Author: vnugent Date: Wed May 29 13:34:20 2024 -0400 missed extra argument commit 88c9095743a12cf8fc1793c607ba3a1e4fa86483 Author: vnugent Date: Wed May 29 13:25:51 2024 -0400 refactor!: return NC_SUCCESS when validating secret key commit 718be80a4810b9352de7eb0707da54020aa6b649 Author: vnugent Date: Mon May 27 14:52:41 2024 -0400 fix: Properly build mbedtls & cmake fixes commit a8a6efb2319f739e5faae550561dc27d9dd1e88d Author: vnugent Date: Sun May 26 17:39:40 2024 -0400 chore: Update libs, reorder files, internalize private headers commit 72e1b7be4031e2fd4d258fcf434ad049c0029201 Author: vnugent Date: Sun May 26 13:39:08 2024 -0400 fix: Add c++ extern prototypes in noscrypt.h commit aeaac8d328b75911541be64d6f09d58fca294a08 Author: vnugent Date: Sun May 26 11:47:17 2024 -0400 refactor: Dep update, openssl chacha20 added commit 86b02540cce6015cfe4a2a56499a9a2f45d4e368 Author: vnugent Date: Sat May 18 12:24:17 2024 -0400 refactor: Remove NCContext structure definition commit d09d9330415d463ca19be9394b02ce11b3366f7e Author: vnugent Date: Mon May 13 22:33:50 2024 -0400 fix: update mbedtls inline issue includes commit 7838cb4bb15d4f453f92f56ece75e2b03986fe42 Author: vnugent Date: Mon May 13 22:29:16 2024 -0400 fix: force fPIC for secp256k1 targets commit d76f7708bc6ae81a638ca708230ac9153ac754e2 Merge: aa8033d a526139 Author: vnugent Date: Sun May 12 00:37:01 2024 -0400 Merge branch 'master' into develop commit aa8033d4dbfebeb72b6fd7a0cd218ebde0eb54dd Author: vnugent Date: Sun May 12 00:34:20 2024 -0400 Final overview and test before tag commit 4e3ead2cf1d3068e77f0959dfdc17e20e9102a0f Merge: 2cee801 872c49d Author: vnugent Date: Mon May 6 22:08:09 2024 -0400 Merge branch 'master' into develop commit 2cee801979bfbcb3b0e53f592ce8c779b57cb679 Author: vnugent Date: Mon May 6 22:02:39 2024 -0400 Ensure static and dynamic libs get same args commit f533694023133552d0d42933d779c95a5854343f Author: vnugent Date: Mon May 6 21:50:29 2024 -0400 feat: CMake install & fetch-content test & updates commit 940ff20348b13d0bc30d9e9f4289dd6de20b16ba Author: vnugent Date: Sun May 5 14:07:28 2024 -0400 codeberg readonly push commit b34ed055c0b7d143561ce8798e0a95313b9224bd Merge: 0a40e20 e737556 Author: vnugent Date: Sat May 4 14:06:45 2024 -0400 Merge branch 'master' into develop commit 0a40e209d03e8ff9b6f81cd5969d3e845c633bfc Author: vnugent Date: Sat May 4 13:55:19 2024 -0400 ci: Force disable testing for win ci builds commit 55fae189fffc86f07a3448370f0a746670819712 Author: vnugent Date: Thu May 2 21:54:35 2024 -0400 feat: Working and tested openssl impl & defaults commit 6ff8bb11774c51fd341b7699a3938fd894995fbf Author: vnugent Date: Thu Apr 25 17:45:42 2024 -0400 refactor: Finish support and testing for mbedtls commit 7cb7a93de4f6f5e741bc5129e3d928e44f050930 Author: vnugent Date: Tue Apr 23 18:19:31 2024 -0400 refactor!: MbedTLS on Windows, switch to uint32 commit 30e8dda6cbea86bdee6d5dfe48514385d3b9f81b Author: vnugent Date: Tue Apr 23 14:48:05 2024 -0400 refactor: Crypto dep redesign working on Windows commit d09c6c1bd5da3e2d79351daeba304ca99976a726 Author: vnugent Date: Thu Apr 18 00:28:51 2024 -0400 refactor!: Pushing what I have to dev commit 54e06ada7d624ed0d28c6a6db04a149708841bf8 Author: vnugent Date: Sat Apr 13 01:24:00 2024 -0400 fix: convert constants to hex, inline macro, ParseErrorCode commit 4215e3100d9a0d23119080d09638fa5b60d0c6d4 Merge: d3328f4 7485aa5 Author: vnugent Date: Wed Apr 3 18:26:30 2024 -0400 Merge branch 'master' into develop commit d3328f4152b22b28f24c43dda62464287f1efff5 Author: vnugent Date: Wed Apr 3 18:22:56 2024 -0400 build: Included dependency and versions in client builds commit b11bc0bac955fd5c6db65f0da48456bf5e748805 Author: vnugent Date: Wed Apr 3 18:10:08 2024 -0400 fix: Fix c89 compatabilty comments and struct assignment commit 9915bd41799a72413e6b400e150aa9f5fa797e25 Merge: 8e3d6ea 5184d7d Author: vnugent Date: Sat Mar 30 09:57:30 2024 -0400 Merge branch 'master' into develop commit 8e3d6ea5e3c83fe42cb904b6ccc4fe2b73f76aae Author: vnugent Date: Sat Mar 30 09:52:55 2024 -0400 refactor!: Some api (struct) changes and updated tests commit e88e8420520204e20802516f01d4488bb0b1d6ea Merge: 490dfee 21f6c0a Author: vnugent Date: Sun Mar 3 15:02:34 2024 -0500 Merge branch 'master' into develop commit 490dfee4ef22479009627435c6ad728c3cbbab54 Author: vnugent Date: Sun Mar 3 14:59:25 2024 -0500 test: #3 tests for encryption/description and Macs commit efa97490b7ed47f4e2f05bee52e2b33e14e439e6 Merge: 1b84e3c 120022a Author: vnugent Date: Sun Mar 3 14:55:48 2024 -0500 merge master commit 1b84e3c7c2e55b1ff9ffdd09b66873e11c131441 Author: vnugent Date: Sat Mar 2 22:57:36 2024 -0500 fix: #2 constent usage of sizeof() operator on struct types commit 9de5a214c66adea0ef2d0bac63c59449de202a88 Author: vnugent Date: Fri Mar 1 14:30:36 2024 -0500 perf: avoid nc_key struct copy, cast and verify instead commit b917b761120ed684af28d0707673ffadcf14b8fe Author: vnugent Date: Mon Feb 12 22:06:50 2024 -0500 fix: found the constant time memcompare function commit 9f85fff3b9f25da7410569ea94f994b88feb3910 Author: vnugent Date: Fri Feb 9 22:48:35 2024 -0500 feat: added/update MAC functions to sign or verify nip44 payload commit aa5113741bb419b02d6ea416bba571fa3d65db46 Author: vnugent Date: Wed Feb 7 01:37:53 2024 -0500 add missing hmac-key output buffer commit 55f47d22cc9ce4d1e22b70814d608c7ef3b1bbc9 Author: vnugent Date: Sun Feb 4 21:08:13 2024 -0500 simple bug fixes, and public api argument validation tests commit 73c5a713fb164ae8b4ac8a891a8020e08eae0a3b Author: vnugent Date: Fri Feb 2 23:05:48 2024 -0500 update api to return secpvalidate return code instead of internal return codes commit 06c73004e1a39a7ea4ea3a89c22dee0f66adb236 Author: vnugent Date: Fri Feb 2 19:25:17 2024 -0500 change to lgpl license commit 6e79fdb3b6b6739fc7797d47e55a7691306cf736 Author: vnugent Date: Wed Jan 31 21:30:49 2024 -0500 move validation macros, and optionally disable them commit ac1e58837f1ba687939f78b5c03cadd346c10ddd Author: vnugent Date: Tue Jan 30 12:25:05 2024 -0500 couple more tests, renable range checks, set flags for all projects --- src/noscrypt.c | 71 +++++++++++++++++++++++++++++------------------------- src/noscryptutil.c | 57 ++++++++++++++++++++++++++++++++----------- 2 files changed, 81 insertions(+), 47 deletions(-) (limited to 'src') diff --git a/src/noscrypt.c b/src/noscrypt.c index deadca6..fededaf 100644 --- a/src/noscrypt.c +++ b/src/noscrypt.c @@ -310,7 +310,7 @@ static _nc_fn_inline NCResult _encryptNip44Ex( result = NC_SUCCESS; - ncSpanInitC(&nonceSpan, args->nonceData, NC_ENCRYPTION_NONCE_SIZE); + ncSpanInitC(&nonceSpan, args->nonceData, NC_NIP44_IV_SIZE); /* Message key will be derrived on every encryption call */ if (_getMessageKey(ck, nonceSpan, &messageKey) != CSTATUS_OK) @@ -344,13 +344,14 @@ static _nc_fn_inline NCResult _decryptNip44Ex(const NCContext* ctx, const struct struct message_key messageKey; const struct nc_expand_keys* cipherKeys; - DEBUG_ASSERT2(ctx != NULL, "Expected valid context") - DEBUG_ASSERT2(ck != NULL, "Expected valid conversation key") - DEBUG_ASSERT2(args != NULL, "Expected valid encryption args") + DEBUG_ASSERT2(ctx != NULL, "Expected valid context"); + DEBUG_ASSERT2(ck != NULL, "Expected valid conversation key"); + DEBUG_ASSERT2(args != NULL, "Expected valid encryption args"); + DEBUG_ASSERT(args->version == NC_ENC_VERSION_NIP44); result = NC_SUCCESS; - ncSpanInitC(&nonceSpan, args->nonceData, NC_ENCRYPTION_NONCE_SIZE); + ncSpanInitC(&nonceSpan, args->nonceData, NC_NIP44_IV_SIZE); if (_getMessageKey(ck, nonceSpan, &messageKey) != CSTATUS_OK) { @@ -401,7 +402,7 @@ static NCResult _verifyMacEx( DEBUG_ASSERT2(conversationKey != NULL, "Expected valid conversation key") DEBUG_ASSERT2(args != NULL, "Expected valid mac verification args") - ncSpanInitC(&nonceSpan, args->nonce32, NC_ENCRYPTION_NONCE_SIZE); + ncSpanInitC(&nonceSpan, args->nonce32, NC_NIP44_IV_SIZE); ncSpanInitC(&payloadSpan, args->payload, args->payloadSize); /* @@ -979,7 +980,7 @@ Cleanup: return result; } -NC_EXPORT NCResult NCComputeMac( +NC_EXPORT NCResult NC_CC NCComputeMac( const NCContext* ctx, const uint8_t hmacKey[NC_HMAC_KEY_SIZE], const uint8_t* payload, @@ -1069,13 +1070,14 @@ Cleanup: #define ENSURE_ENC_MODE(args, mode) if(args->version != mode) return E_VERSION_NOT_SUPPORTED; -NC_EXPORT NCResult NCSetEncryptionPropertyEx( +NC_EXPORT NCResult NC_CC NCEncryptionSetPropertyEx( NCEncryptionArgs* args, uint32_t property, uint8_t* value, uint32_t valueLen ) { + uint32_t ivSize; CHECK_NULL_ARG(args, 0) CHECK_NULL_ARG(value, 2) @@ -1091,22 +1093,6 @@ NC_EXPORT NCResult NCSetEncryptionPropertyEx( return NC_SUCCESS; - case NC_ENC_SET_NIP04_IV: - /* - * The safest way to store the nip04 IV is in the nonce - * field. An IV is essentially a nonce. A secure random - * number used to encrypt the first block of a CBC chain. - */ - - CHECK_ARG_RANGE(valueLen, AES_IV_SIZE, UINT32_MAX, 3) - - ENSURE_ENC_MODE(args, NC_ENC_VERSION_NIP04) - - args->nonceData = value; - - return NC_SUCCESS; - - case NC_ENC_SET_NIP04_KEY: /* * The AES key is stored in the hmac key field, since @@ -1122,13 +1108,17 @@ NC_EXPORT NCResult NCSetEncryptionPropertyEx( return NC_SUCCESS; - case NC_ENC_SET_NIP44_NONCE: + case NC_ENC_SET_IV: + + ivSize = NCEncryptionGetIvSize(args->version); - /* Nonce buffer must be at least the size, max doesnt matter */ - CHECK_ARG_RANGE(valueLen, NC_ENCRYPTION_NONCE_SIZE, UINT32_MAX, 3) + /* Gaurd invalid version */ + if (ivSize == 0) + { + return E_VERSION_NOT_SUPPORTED; + } - /* Nonce is only used in nip44 mode */ - ENSURE_ENC_MODE(args, NC_ENC_VERSION_NIP44) + CHECK_ARG_RANGE(valueLen, ivSize, ivSize, 3) args->nonceData = value; @@ -1155,13 +1145,13 @@ NC_EXPORT NCResult NCSetEncryptionPropertyEx( return E_INVALID_ARG; } -NC_EXPORT NCResult NCSetEncryptionProperty( +NC_EXPORT NCResult NC_CC NCEncryptionSetProperty( NCEncryptionArgs* args, uint32_t property, uint32_t value ) { - return NCSetEncryptionPropertyEx( + return NCEncryptionSetPropertyEx( args, property, (uint8_t*)&value, @@ -1169,7 +1159,7 @@ NC_EXPORT NCResult NCSetEncryptionProperty( ); } -NC_EXPORT NCResult NCSetEncryptionData( +NC_EXPORT NCResult NC_CC NCEncryptionSetData( NCEncryptionArgs* args, const uint8_t* input, uint8_t* output, @@ -1186,4 +1176,19 @@ NC_EXPORT NCResult NCSetEncryptionData( args->dataSize = dataSize; return NC_SUCCESS; -} \ No newline at end of file +} + +NC_EXPORT uint32_t NC_CC NCEncryptionGetIvSize(uint32_t version) +{ + switch (version) + { + case NC_ENC_VERSION_NIP04: + return NC_NIP04_IV_SIZE; + + case NC_ENC_VERSION_NIP44: + return NC_NIP44_IV_SIZE; + + default: + return 0; + } +} diff --git a/src/noscryptutil.c b/src/noscryptutil.c index 4cee2c3..89e0f35 100644 --- a/src/noscryptutil.c +++ b/src/noscryptutil.c @@ -37,6 +37,7 @@ #define MIN_PADDING_SIZE 0x20u #define NIP44_VERSION_SIZE 0x01u #define NIP44_PT_LEN_SIZE sizeof(uint16_t) +#define NIP44_NONCE_SIZE NC_NIP44_IV_SIZE /* * minimum size for a valid nip44 payload @@ -200,7 +201,7 @@ static _nc_fn_inline uint32_t _calcNip44TotalOutSize(uint32_t inputSize) bufferSize = NIP44_VERSION_SIZE; - bufferSize += NC_ENCRYPTION_NONCE_SIZE; + bufferSize += NIP44_NONCE_SIZE; bufferSize += NIP44_PT_LEN_SIZE; @@ -267,7 +268,7 @@ static _nc_fn_inline int _nip44ParseSegments( *nonce = ncSpanSliceC( payload, NIP44_VERSION_SIZE, - NC_ENCRYPTION_NONCE_SIZE + NIP44_NONCE_SIZE ); /* @@ -293,8 +294,8 @@ static _nc_fn_inline int _nip44ParseSegments( */ *cipherText = ncSpanSliceC( payload, - NIP44_VERSION_SIZE + NC_ENCRYPTION_NONCE_SIZE, - payload.size - (NIP44_VERSION_SIZE + NC_ENCRYPTION_NONCE_SIZE + NC_ENCRYPTION_MAC_SIZE) + NIP44_VERSION_SIZE + NIP44_NONCE_SIZE, + payload.size - (NIP44_VERSION_SIZE + NIP44_NONCE_SIZE + NC_ENCRYPTION_MAC_SIZE) ); return 1; @@ -357,12 +358,23 @@ static NCResult _nip44EncryptCompleteCore( ZERO_FILL(hmacKeyOut, sizeof(hmacKeyOut)); + /* Get the nonce/iv size so we know how much nonce data to write */ + result = NCUtilCipherGetIvSize(state); + DEBUG_ASSERT(result > 0); + /* Start by appending the version number */ ncSpanAppend(message, &outPos, Nip44VersionValue, sizeof(Nip44VersionValue)); /* next is nonce data */ - ncSpanAppend(message, &outPos, encArgs.nonceData, NC_ENCRYPTION_NONCE_SIZE); - DEBUG_ASSERT(outPos == 1 + NC_ENCRYPTION_NONCE_SIZE); + ncSpanAppend(message, &outPos, encArgs.nonceData, (uint32_t)result); + + /* + * Assert the output points to the end of the nonce segment + * for nip44 this is exactly 33 bytes. This assert also doubles + * to check the output of NCUtilCipherGetIvSize() to ensure + * it's returning the correct size for nip44 + */ + DEBUG_ASSERT(outPos == 1 + NIP44_NONCE_SIZE); /* * Assign the hmac key from the stack buffer. Since the args structure @@ -372,7 +384,7 @@ static NCResult _nip44EncryptCompleteCore( * addresses. */ - result = NCSetEncryptionPropertyEx( + result = NCEncryptionSetPropertyEx( &encArgs, NC_ENC_SET_NIP44_MAC_KEY, hmacKeyOut, @@ -397,7 +409,7 @@ static NCResult _nip44EncryptCompleteCore( * plainText size field. */ - result = NCSetEncryptionData( + result = NCEncryptionSetData( &encArgs, ncSpanGetOffset(message, outPos), /* in place encryption */ ncSpanGetOffset(message, outPos), @@ -517,7 +529,7 @@ static NCResult _nip44DecryptCompleteCore( if ((state->_flags & NC_UTIL_CIPHER_MAC_NO_VERIFY) == 0) { DEBUG_ASSERT(ncSpanGetSizeC(macValue) == NC_ENCRYPTION_MAC_SIZE); - DEBUG_ASSERT(ncSpanGetSizeC(macData) > NC_ENCRYPTION_NONCE_SIZE + MIN_PADDING_SIZE); + DEBUG_ASSERT(ncSpanGetSizeC(macData) > NIP44_NONCE_SIZE + MIN_PADDING_SIZE); /* Assign the mac data to the mac verify args */ macArgs.mac32 = ncSpanGetOffsetC(macValue, 0); @@ -550,7 +562,7 @@ static NCResult _nip44DecryptCompleteCore( DEBUG_ASSERT2(cipherText.size >= MIN_PADDING_SIZE, "Cipertext segment was parsed incorrectly. Too small"); - result = NCSetEncryptionData( + result = NCEncryptionSetData( &encArgs, ncSpanGetOffsetC(cipherText, 0), ncSpanGetOffset(output, 0), /*decrypt ciphertext and write directly to the output buffer */ @@ -653,6 +665,10 @@ NC_EXPORT NCUtilCipherContext* NC_CC NCUtilCipherAlloc(uint32_t encVersion, uint if (encCtx != NULL) { + /* + * Technically I should be using the NCEncSetProperty but this + * is an acceptable shortcut for now, may break in future + */ encCtx->encArgs.version = encVersion; encCtx->_flags = flags; } @@ -694,7 +710,7 @@ NC_EXPORT NCResult NC_CC NCUtilCipherInit( CHECK_NULL_ARG(encCtx, 0); CHECK_NULL_ARG(inputData, 1); - if ((encCtx->_flags & NC_UTIL_CIPHER_MODE_DECRYPT) > 0) + if ((encCtx->_flags & NC_UTIL_CIPHER_MODE) == NC_UTIL_CIPHER_MODE_DECRYPT) { /* * Validate the input data for proper format for @@ -842,7 +858,7 @@ NC_EXPORT NCResult NC_CC NCUtilCipherReadOutput( return (NCResult)encCtx->buffer.actualOutput.size; } -NC_EXPORT NCResult NCUtilCipherSetProperty( +NC_EXPORT NCResult NC_CC NCUtilCipherSetProperty( NCUtilCipherContext* ctx, uint32_t property, uint8_t* value, @@ -852,7 +868,7 @@ NC_EXPORT NCResult NCUtilCipherSetProperty( CHECK_NULL_ARG(ctx, 0) /* All other arguments are verified */ - return NCSetEncryptionPropertyEx( + return NCEncryptionSetPropertyEx( &ctx->encArgs, property, value, @@ -889,7 +905,7 @@ NC_EXPORT NCResult NC_CC NCUtilCipherUpdate( { case NC_ENC_VERSION_NIP44: - if ((encCtx->_flags & NC_UTIL_CIPHER_MODE_DECRYPT) > 0) + if ((encCtx->_flags & NC_UTIL_CIPHER_MODE) == NC_UTIL_CIPHER_MODE_DECRYPT) { return _nip44DecryptCompleteCore(libContext, sk, pk, encCtx); } @@ -908,3 +924,16 @@ NC_EXPORT NCResult NC_CC NCUtilCipherUpdate( return E_VERSION_NOT_SUPPORTED; } } + +NC_EXPORT NCResult NC_CC NCUtilCipherGetIvSize(const NCUtilCipherContext* encCtx) +{ + uint32_t ivSize; + + CHECK_NULL_ARG(encCtx, 0); + + ivSize = NCEncryptionGetIvSize(encCtx->encArgs.version); + + return ivSize == 0 + ? E_VERSION_NOT_SUPPORTED + : (NCResult)ivSize; +} -- cgit