From e7375560d465f6da71aae0483c0e7a72535ccc10 Mon Sep 17 00:00:00 2001 From: vnugent Date: Sat, 4 May 2024 14:06:06 -0400 Subject: Squashed commit of the following: 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.h | 563 --------------------------------------------------------- 1 file changed, 563 deletions(-) delete mode 100644 src/noscrypt.h (limited to 'src/noscrypt.h') diff --git a/src/noscrypt.h b/src/noscrypt.h deleted file mode 100644 index 6a40171..0000000 --- a/src/noscrypt.h +++ /dev/null @@ -1,563 +0,0 @@ -/* -* Copyright (c) 2024 Vaughn Nugent -* -* Package: noscrypt -* File: noscrypt.h -* -* This library is free software; you can redistribute it and/or -* modify it under the terms of the GNU Lesser General Public License -* as published by the Free Software Foundation; either version 2.1 -* of the License, or (at your option) any later version. -* -* This library is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -* Lesser General Public License for more details. -* -* You should have received a copy of the GNU Lesser General Public License -* along with NativeHeapApi. If not, see http://www.gnu.org/licenses/. -*/ - -/* -* noscrypt is a an open-source, strict C89 library that performs the basic -* cryptographic operations found in the Nostr protocol. It is designed to be -* portable and easy to use in any C89 compatible environment. It is also designed -*/ - -#pragma once - -#ifndef NOSCRYPT_H -#define NOSCRYPT_H - -#include -#include - -#if defined(_MSC_VER) || defined(WIN32) || defined(_WIN32) - #define _NC_IS_WINDOWS -#endif - -/* Set api export calling convention (allow used to override) */ -#ifndef NC_CC - #ifdef _NC_IS_WINDOWS - /* STD for importing to other languages such as .NET */ - #define NC_CC __stdcall - #else - #define NC_CC - #endif -#endif /* !NC_CC */ - -#ifndef NC_EXPORT /* Allow users to disable the export/impoty macro if using source code directly */ - #ifdef NOSCRYPT_EXPORTING - #ifdef _NC_IS_WINDOWS - #define NC_EXPORT __declspec(dllexport) - #else - #define NC_EXPORT __attribute__((visibility("default"))) - #endif /* _NC_IS_WINDOWS */ - #else - #ifdef _NC_IS_WINDOWS - #define NC_EXPORT __declspec(dllimport) - #else - #define NC_EXPORT - #endif /* _NC_IS_WINDOWS */ - #endif /* !NOSCRYPT_EXPORTING */ -#endif /* !NC_EXPORT */ - -/* -* CONSTANTS -*/ -#define BIP340_PUBKEY_HEADER_BYTE 0x02 -#define NIP44_MESSAGE_KEY_SIZE 76 -#define NC_ENCRYPTION_NONCE_SIZE 32 -#define NC_SEC_KEY_SIZE 32 -#define NC_PUBKEY_SIZE 32 -#define NC_SHARED_SEC_SIZE 32 -#define NC_CONV_KEY_SIZE 32 -#define NC_HMAC_KEY_SIZE 32 -#define NC_ENCRYPTION_MAC_SIZE 32 -#define NC_MESSAGE_KEY_SIZE NIP44_MESSAGE_KEY_SIZE - -/* -* From spec -* https://github.com/nostr-protocol/nips/blob/master/44.md#decryption -*/ -#define NIP44_MIN_ENC_MESSAGE_SIZE 1 -#define NIP44_MAX_ENC_MESSAGE_SIZE 65535 - -/* -* The Nip44 constant salt -* https://github.com/nostr-protocol/nips/blob/master/44.md#encryption -*/ -static const uint8_t Nip44ConstantSalt[8] = { 0x6e, 0x69, 0x70, 0x34, 0x34, 0x2d, 0x76, 0x32 }; - -/* -* ERROR CODES -* -* Error codes are 64bit integers. The lower 8 bits are reserved for -* the error code, and the upper 8 bits are reserved for the argument -* position. -* -* NCResult type is 64bit to also allow for positive return values for -* operations that return a value count. -*/ - -#define NC_ARG_POSITION_OFFSET 8 -#define NC_ERROR_CODE_MASK 0xFF - -#define NC_SUCCESS 0 -#define E_NULL_PTR -1 -#define E_INVALID_ARG -2 -#define E_INVALID_CONTEXT -3 -#define E_ARGUMENT_OUT_OF_RANGE -4 -#define E_OPERATION_FAILED -5 - -/* A compressed resul/return value, negative values -are failure, 0 is success and positive values are -defined by the operation. -*/ -typedef int64_t NCResult; - -/* - An secp256k1 secret key (aka 32byte private key buffer) -*/ -typedef struct secret_key_struct { - - uint8_t key[NC_SEC_KEY_SIZE]; - -}NCSecretKey; - -/* - An x-only secp256k1 public key -*/ -typedef struct xonly_pubkey_struct { - - uint8_t key[NC_PUBKEY_SIZE]; - -}NCPublicKey; - -/* - An opaque full library context object -*/ -typedef struct ctx_struct { - - void* secpCtx; - -}NCContext; - -/* -* The encryption arguments structure. This structure is used to pass -arguments to the encryption and decryption functions. It stores the -data buffers and required nonce used for the stream cipher. -*/ -typedef struct nc_encryption_struct { - - /* The nonce used for the stream cipher. */ - const uint8_t* nonce32; - - /* The input data buffer to encrypt/decrypt */ - const void* inputData; - - /* The output data buffer to write data to */ - void* outputData; - - /* The size of the data buffers. Buffers must - * be the same size or larger than this value - */ - uint32_t dataSize; - -} NCCryptoData; - -/* -* A structure for Nip44 message authentication code verification. This structure -* is used to pass arguments to the NCVerifyMac and NCVerifyMacEx functions. -*/ -typedef struct nc_mac_verify { - - /* The message authentication code certifying the Nip44 payload */ - const uint8_t* mac32; - - /* The nonce used for the original message encryption */ - const uint8_t* nonce32; - - /* The message payload data */ - const uint8_t* payload; - - /* The size of the payload data */ - size_t payloadSize; - -} NCMacVerifyArgs; - - -/* - API FUNCTIONS -*/ - -/* -* A helper function to cast a 32byte buffer to a NCSecretKey struct -* @param key The 32byte buffer to cast -* @return A pointer to the NCSecretKey struct -*/ -static inline NCSecretKey* NCToSecKey(uint8_t key[NC_SEC_KEY_SIZE]) -{ - return (NCSecretKey*)key; -} - -/* -* A helper function to cast a 32byte buffer to a NCPublicKey struct -* @param key The 32byte buffer to cast -* @return A pointer to the NCPublicKey struct -*/ -static inline NCPublicKey* NCToPubKey(uint8_t key[NC_PUBKEY_SIZE]) -{ - return (NCPublicKey*)key; -} - -static inline NCResult NCResultWithArgPosition(NCResult err, uint8_t argPosition) -{ - return -(((NCResult)argPosition << NC_ARG_POSITION_OFFSET) | -err); -} - -/* -* Parses an error code and returns the error code and the argument position -that caused the error. -* @param result The error code to parse -* @param code A pointer to the error code to write to -* @param argPosition A pointer to the argument position to write to -*/ -NC_EXPORT void NC_CC NCParseErrorCode(NCResult result, int* code, uint8_t* argPosition) -{ - /* convert result to a positive value*/ - NCResult asPositive = -result; - - /* Get the error code from the lower 8 bits and the argument position from the upper 8 bits*/ - *code = -(asPositive & NC_ERROR_CODE_MASK); - *argPosition = (asPositive >> NC_ARG_POSITION_OFFSET) & 0xFF; -} - -/*-------------------------------------- -* LIB CONTEXT API -*/ - -/* -* Runtime check for the size of the context struct to allow -for dynamic allocation when context size structure is not known. -* @return The size of the context struct in bytes -*/ -NC_EXPORT uint32_t NC_CC NCGetContextStructSize(void); -/* -* Initializes a context struct with the given entropy -* @param ctx A pointer to the context structure to initialize -* @param entropy The 32byte entropy to initialize the context with -* @return NC_SUCCESS if the operation was successful, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCInitContext( - NCContext* ctx, - const uint8_t entropy[32] -); -/* -* Reinitializes a context struct with the given -* @param ctx A pointer to the context structure to initialize -* @param entropy The 32byte entropy to initialize the context with -* @return NC_SUCCESS if the operation was successful, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCReInitContext( - NCContext* ctx, - const uint8_t entropy[32] -); - -/* -* Destroys a context struct -* @param ctx A pointer to the existing context structure to destroy -* @return NC_SUCCESS if the operation was successful, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCDestroyContext(NCContext* ctx); - - - -/*-------------------------------------- -* HIGH LEVEL SIGNING API -*/ - -/* -* Gets a 32byte x-only compressed public key from the given secret key -* @param ctx A pointer to the existing library context -* @param sk A pointer to the secret key -* @param pk A pointer to the compressed public key buffer to write to -* @return NC_SUCCESS if the operation was successful, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCGetPublicKey( - const NCContext* ctx, - const NCSecretKey* sk, - NCPublicKey* pk -); -/* -* Validates that a given secret key is valid according to the secp256k1 curve. This -is functionally the same as calling secp256k1_ec_seckey_verify. -* @param ctx A pointer to the existing library context -* @param sk A pointer to the secret key to verify -* @return 1 if the secret key is valid, 0 if it is not, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCValidateSecretKey( - const NCContext* ctx, - const NCSecretKey* sk -); - - -/* -* Signs a raw message after computing the sha256 checksum using the -given secret key and writes the signature to the sig64 buffer. -* @param ctx A pointer to the existing library context -* @param sk A pointer to the secret key to sign with -* @param random32 A pointer to the 32byte random32 buffer to use for signing -* @param data A pointer to the raw data buffer to sign -* @param dataSize The size of the raw data buffer -* @param sig64 A pointer to the 64byte buffer to write the signature to -* @return NC_SUCCESS if the operation was successful, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCSignData( - const NCContext* ctx, - const NCSecretKey* sk, - const uint8_t random32[32], - const uint8_t* data, - const size_t dataSize, - uint8_t sig64[64] -); - -/* -* Verifies a signature of a raw data buffer matches the output using the given public key. -* @param ctx A pointer to the existing library context -* @param sig64 The 64byte signature to verify -* @param data A pointer to the raw data buffer to verify -* @param dataSize The size of the raw data buffer -* @param pk A pointer to the the x-only compressed public key (x-only serialized public key) -* @return NC_SUCCESS if the signature could be verified, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCVerifyData( - const NCContext* ctx, - const NCPublicKey* pk, - const uint8_t* data, - const size_t dataSize, - const uint8_t sig64[64] -); - -/*-------------------------------------- -* EXTENDED SIGNING API -*/ - -/* -* Signs a message using the given secret key and writes the signature to the sig64 buffer -* @param ctx A pointer to the existing library context -* @param sk A pointer to the secret key to sign with -* @param random32 A pointer to the 32byte random32 buffer to use for signing -* @param digest32 A pointer to 32byte sha256 digest32 to sign -* @param sig64 A pointer to the 64byte buffer to write the signature to -* @return NC_SUCCESS if the operation was successful, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCSignDigest( - const NCContext* ctx, - const NCSecretKey* sk, - const uint8_t random32[32], - const uint8_t digest32[32], - uint8_t sig64[64] -); - -/* -* Verifies a signature of a digest32 matches the output using the given public key. -Equivalent to calling secp256k1_schnorrsig_verify. -* @param ctx A pointer to the existing library context -* @param sig64 The 64byte signature to verify -* @param digest32 The 32byte digest32 to verify -* @param pk A pointer to the the x-only compressed public key (x-only serialized public key) -* @return NC_SUCCESS if the signature could be verified, otherwise an error code -*/ -NC_EXPORT NCResult NC_CC NCVerifyDigest( - const NCContext* ctx, - const NCPublicKey* pk, - const uint8_t digest32[32], - const uint8_t sig64[64] -); - - - -/*-------------------------------------- -* HIGH LEVEL ENCRYPTION API -*/ - -/* -* NOTES -* -* NIP-44 requires that plaintext/ciphertext must be padded in powers of 2. -* Since this library operates on data at the binary level, and does not do -* ANY runtime heap allocation, it is up to the user to ensure that the -* plaintext/ciphertext buffers are padded properly in The NCryptoData struct -* before calling the encryption/decryption functions. -*/ - -/* -* High level api for encrypting nostr messages using a secret key and a public key. Use -the NCEncryptEx functions for extended encryption functionality -* @param ctx The library context -* @param sk The secret key (the local private key) -* @param pk The 32byte compressed public key (x-only serialized public key) the other user's public key -* @param args The encryption arguments -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error -*/ -NC_EXPORT NCResult NC_CC NCEncrypt( - const NCContext* ctx, - const NCSecretKey* sk, - const NCPublicKey* pk, - uint8_t hmacKeyOut[NC_HMAC_KEY_SIZE], - NCCryptoData* args -); - -/* -* High level api for decrypting nostr messages using a secret key and a public key. Use -the NCDecryptEx functions for extended decryption functionality. -* @param ctx The library context -* @param sk The secret key (the local private key) -* @param pk The 32byte compressed public key (x-only serialized public key) the other user's public key -* @param args The decryption arguments -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error -*/ -NC_EXPORT NCResult NC_CC NCDecrypt( - const NCContext* ctx, - const NCSecretKey* sk, - const NCPublicKey* pk, - NCCryptoData* args -); - -/* -* High level api for verifying a Nip44 message authentication code using a secret key -and a public key. Use the NCVerifyMacEx functions for extended verification functionality. -* @param ctx A pointer to an existing library context -* @param sk A pointer to the secret key -* @param pk A pointer to the 32byte compressed public key (x-only serialized public key) -* @param args A pointer to the mac verification arguments -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -* the error code and positional argument that caused the error -*/ -NC_EXPORT NCResult NC_CC NCVerifyMac( - const NCContext* ctx, - const NCSecretKey* sk, - const NCPublicKey* pk, - NCMacVerifyArgs* args -); - -/*-------------------------------------- -* EXTENDED ENCRYPTION API -*/ - -/* -* Computes a NIP-44 shared secret from a secret key and a public key and -stores it in the sharedPoint buffer. -* @param ctx A pointer to the existing library context -* @param sk The secret key -* @param pk The 32byte compressed public key (x-only serialized public key) -* @param sharedPoint The 32byte buffer to store write the secret data to -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error -*/ -NC_EXPORT NCResult NC_CC NCGetSharedSecret( - const NCContext* ctx, - const NCSecretKey* sk, - const NCPublicKey* pk, - uint8_t sharedPoint[NC_SHARED_SEC_SIZE] -); - -/* -* Computes a NIP-44 conversation key from the local secret key and the remote -public key, and stores it in the conversationKey buffer. -* @param ctx A pointer to the existing library context -* @param sk A pointer to the 32byte the secret key -* @param pk A pointer to the 32byte compressed public key (x-only serialized public key) -* @param conversationKey The 32byte buffer to store write the conversation key to -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error -*/ -NC_EXPORT NCResult NC_CC NCGetConversationKey( - const NCContext* ctx, - const NCSecretKey* sk, - const NCPublicKey* pk, - uint8_t conversationKey[NC_CONV_KEY_SIZE] -); -/* -* Computes a NIP-44 conversation key a shared secret/point, and stores it in the -conversationKey buffer. -* @param ctx A pointer to the existing library context -* @param sharedPoint A pointer to the 32byte shared secret/point -* @param conversationKey The 32byte buffer to store write the conversation key to -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error -*/ -NC_EXPORT NCResult NC_CC NCGetConversationKeyEx( - const NCContext* ctx, - const uint8_t sharedPoint[NC_SHARED_SEC_SIZE], - uint8_t conversationKey[NC_CONV_KEY_SIZE] -); - -/* -* Encrypts a message using the given conversation key and writes the encrypted message to the -* output buffer. The output buffer must be at least 99 bytes in size. -* @param ctx A pointer to the existing library context -* @param conversationKey A pointer to the 32byte conversation key -* @param args A pointer to the encryption arguments structure -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error. -*/ -NC_EXPORT NCResult NC_CC NCEncryptEx( - const NCContext* ctx, - const uint8_t conversationKey[NC_CONV_KEY_SIZE], - uint8_t hmacKeyOut[NC_HMAC_KEY_SIZE], - NCCryptoData* args -); - -/* -* Decrypts a message using the given conversation key and writes the decrypted message to the -* output buffer. -* @param ctx A pointer to the existing library context -* @param conversationKey A pointer to the 32byte conversation key -* @param args A pointer to the decryption arguments structure -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -the error code and positional argument that caused the error. -*/ -NC_EXPORT NCResult NC_CC NCDecryptEx( - const NCContext* ctx, - const uint8_t conversationKey[NC_CONV_KEY_SIZE], - NCCryptoData* args -); - -/* -* Verifies a Nip44 message authentication code using the given conversation key. -* @param ctx A pointer to the existing library context -* @param conversationKey A pointer to the 32byte conversation key -* @param args A pointer to the mac verification arguments -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -* the error code and positional argument that caused the error. -*/ -NC_EXPORT NCResult NC_CC NCVerifyMacEx( - const NCContext* ctx, - const uint8_t conversationKey[NC_CONV_KEY_SIZE], - NCMacVerifyArgs* args -); - -/* -* Computes a message authentication code for a given payload using the given hmacKey and writes the -* mac to the hmacOut buffer. -* @param ctx A pointer to the existing library context -* @param hmacKey A pointer to the 32byte hmac key -* @param payload A pointer to the payload data buffer -* @param payloadSize The size of the payload data buffer -* @param hmacOut A pointer to the 32byte buffer to write the mac to -* @return NC_SUCCESS if the operation was successful, otherwise an error code. Use NCParseErrorCode to -* the error code and positional argument that caused the error. -*/ -NC_EXPORT NCResult NCComputeMac( - const NCContext* ctx, - const uint8_t hmacKey[NC_HMAC_KEY_SIZE], - const uint8_t* payload, - size_t payloadSize, - uint8_t hmacOut[NC_ENCRYPTION_MAC_SIZE] -); - -#endif /* !NOSCRYPT_H */ -- cgit