/* $OpenBSD: ed25519test.c,v 1.10 2022/12/01 13:55:22 tb Exp $ */ /* * Copyright (c) 2019, 2022 Theo Buehler * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include #include #include #include #include struct testvector { const uint8_t sec_key[ED25519_PRIVATE_KEY_LENGTH]; const uint8_t pub_key[ED25519_PUBLIC_KEY_LENGTH]; const uint8_t signature[ED25519_SIGNATURE_LENGTH]; const uint8_t message[1024]; size_t message_len; }; /* * Test vectors from https://tools.ietf.org/html/rfc8032#section-7.1. */ static const struct testvector testvectors[] = { { .sec_key = { 0x9d, 0x61, 0xb1, 0x9d, 0xef, 0xfd, 0x5a, 0x60, 0xba, 0x84, 0x4a, 0xf4, 0x92, 0xec, 0x2c, 0xc4, 0x44, 0x49, 0xc5, 0x69, 0x7b, 0x32, 0x69, 0x19, 0x70, 0x3b, 0xac, 0x03, 0x1c, 0xae, 0x7f, 0x60, }, .pub_key = { 0xd7, 0x5a, 0x98, 0x01, 0x82, 0xb1, 0x0a, 0xb7, 0xd5, 0x4b, 0xfe, 0xd3, 0xc9, 0x64, 0x07, 0x3a, 0x0e, 0xe1, 0x72, 0xf3, 0xda, 0xa6, 0x23, 0x25, 0xaf, 0x02, 0x1a, 0x68, 0xf7, 0x07, 0x51, 0x1a, }, .message = { 0x0, /* Windows has stupid compilers... */ }, .message_len = 0, .signature = { 0xe5, 0x56, 0x43, 0x00, 0xc3, 0x60, 0xac, 0x72, 0x90, 0x86, 0xe2, 0xcc, 0x80, 0x6e, 0x82, 0x8a, 0x84, 0x87, 0x7f, 0x1e, 0xb8, 0xe5, 0xd9, 0x74, 0xd8, 0x73, 0xe0, 0x65, 0x22, 0x49, 0x01, 0x55, 0x5f, 0xb8, 0x82, 0x15, 0x90, 0xa3, 0x3b, 0xac, 0xc6, 0x1e, 0x39, 0x70, 0x1c, 0xf9, 0xb4, 0x6b, 0xd2, 0x5b, 0xf5, 0xf0, 0x59, 0x5b, 0xbe, 0x24, 0x65, 0x51, 0x41, 0x43, 0x8e, 0x7a, 0x10, 0x0b, }, }, { .sec_key = { 0x4c, 0xcd, 0x08, 0x9b, 0x28, 0xff, 0x96, 0xda, 0x9d, 0xb6, 0xc3, 0x46, 0xec, 0x11, 0x4e, 0x0f, 0x5b, 0x8a, 0x31, 0x9f, 0x35, 0xab, 0xa6, 0x24, 0xda, 0x8c, 0xf6, 0xed, 0x4f, 0xb8, 0xa6, 0xfb, }, .pub_key = { 0x3d, 0x40, 0x17, 0xc3, 0xe8, 0x43, 0x89, 0x5a, 0x92, 0xb7, 0x0a, 0xa7, 0x4d, 0x1b, 0x7e, 0xbc, 0x9c, 0x98, 0x2c, 0xcf, 0x2e, 0xc4, 0x96, 0x8c, 0xc0, 0xcd, 0x55, 0xf1, 0x2a, 0xf4, 0x66, 0x0c, }, .message = { 0x72, }, .message_len = 1, .signature = { 0x92, 0xa0, 0x09, 0xa9, 0xf0, 0xd4, 0xca, 0xb8, 0x72, 0x0e, 0x82, 0x0b, 0x5f, 0x64, 0x25, 0x40, 0xa2, 0xb2, 0x7b, 0x54, 0x16, 0x50, 0x3f, 0x8f, 0xb3, 0x76, 0x22, 0x23, 0xeb, 0xdb, 0x69, 0xda, 0x08, 0x5a, 0xc1, 0xe4, 0x3e, 0x15, 0x99, 0x6e, 0x45, 0x8f, 0x36, 0x13, 0xd0, 0xf1, 0x1d, 0x8c, 0x38, 0x7b, 0x2e, 0xae, 0xb4, 0x30, 0x2a, 0xee, 0xb0, 0x0d, 0x29, 0x16, 0x12, 0xbb, 0x0c, 0x00, }, }, { .sec_key = { 0xc5, 0xaa, 0x8d, 0xf4, 0x3f, 0x9f, 0x83, 0x7b, 0xed, 0xb7, 0x44, 0x2f, 0x31, 0xdc, 0xb7, 0xb1, 0x66, 0xd3, 0x85, 0x35, 0x07, 0x6f, 0x09, 0x4b, 0x85, 0xce, 0x3a, 0x2e, 0x0b, 0x44, 0x58, 0xf7, }, .pub_key = { 0xfc, 0x51, 0xcd, 0x8e, 0x62, 0x18, 0xa1, 0xa3, 0x8d, 0xa4, 0x7e, 0xd0, 0x02, 0x30, 0xf0, 0x58, 0x08, 0x16, 0xed, 0x13, 0xba, 0x33, 0x03, 0xac, 0x5d, 0xeb, 0x91, 0x15, 0x48, 0x90, 0x80, 0x25, }, .message = { 0xaf, 0x82, }, .message_len = 2, .signature = { 0x62, 0x91, 0xd6, 0x57, 0xde, 0xec, 0x24, 0x02, 0x48, 0x27, 0xe6, 0x9c, 0x3a, 0xbe, 0x01, 0xa3, 0x0c, 0xe5, 0x48, 0xa2, 0x84, 0x74, 0x3a, 0x44, 0x5e, 0x36, 0x80, 0xd7, 0xdb, 0x5a, 0xc3, 0xac, 0x18, 0xff, 0x9b, 0x53, 0x8d, 0x16, 0xf2, 0x90, 0xae, 0x67, 0xf7, 0x60, 0x98, 0x4d, 0xc6, 0x59, 0x4a, 0x7c, 0x15, 0xe9, 0x71, 0x6e, 0xd2, 0x8d, 0xc0, 0x27, 0xbe, 0xce, 0xea, 0x1e, 0xc4, 0x0a, }, }, { .sec_key = { 0xf5, 0xe5, 0x76, 0x7c, 0xf1, 0x53, 0x31, 0x95, 0x17, 0x63, 0x0f, 0x22, 0x68, 0x76, 0xb8, 0x6c, 0x81, 0x60, 0xcc, 0x58, 0x3b, 0xc0, 0x13, 0x74, 0x4c, 0x6b, 0xf2, 0x55, 0xf5, 0xcc, 0x0e, 0xe5, }, .pub_key = { 0x27, 0x81, 0x17, 0xfc, 0x14, 0x4c, 0x72, 0x34, 0x0f, 0x67, 0xd0, 0xf2, 0x31, 0x6e, 0x83, 0x86, 0xce, 0xff, 0xbf, 0x2b, 0x24, 0x28, 0xc9, 0xc5, 0x1f, 0xef, 0x7c, 0x59, 0x7f, 0x1d, 0x42, 0x6e, }, .message = { 0x08, 0xb8, 0xb2, 0xb7, 0x33, 0x42, 0x42, 0x43, 0x76, 0x0f, 0xe4, 0x26, 0xa4, 0xb5, 0x49, 0x08, 0x63, 0x21, 0x10, 0xa6, 0x6c, 0x2f, 0x65, 0x91, 0xea, 0xbd, 0x33, 0x45, 0xe3, 0xe4, 0xeb, 0x98, 0xfa, 0x6e, 0x26, 0x4b, 0xf0, 0x9e, 0xfe, 0x12, 0xee, 0x50, 0xf8, 0xf5, 0x4e, 0x9f, 0x77, 0xb1, 0xe3, 0x55, 0xf6, 0xc5, 0x05, 0x44, 0xe2, 0x3f, 0xb1, 0x43, 0x3d, 0xdf, 0x73, 0xbe, 0x84, 0xd8, 0x79, 0xde, 0x7c, 0x00, 0x46, 0xdc, 0x49, 0x96, 0xd9, 0xe7, 0x73, 0xf4, 0xbc, 0x9e, 0xfe, 0x57, 0x38, 0x82, 0x9a, 0xdb, 0x26, 0xc8, 0x1b, 0x37, 0xc9, 0x3a, 0x1b, 0x27, 0x0b, 0x20, 0x32, 0x9d, 0x65, 0x86, 0x75, 0xfc, 0x6e, 0xa5, 0x34, 0xe0, 0x81, 0x0a, 0x44, 0x32, 0x82, 0x6b, 0xf5, 0x8c, 0x94, 0x1e, 0xfb, 0x65, 0xd5, 0x7a, 0x33, 0x8b, 0xbd, 0x2e, 0x26, 0x64, 0x0f, 0x89, 0xff, 0xbc, 0x1a, 0x85, 0x8e, 0xfc, 0xb8, 0x55, 0x0e, 0xe3, 0xa5, 0xe1, 0x99, 0x8b, 0xd1, 0x77, 0xe9, 0x3a, 0x73, 0x63, 0xc3, 0x44, 0xfe, 0x6b, 0x19, 0x9e, 0xe5, 0xd0, 0x2e, 0x82, 0xd5, 0x22, 0xc4, 0xfe, 0xba, 0x15, 0x45, 0x2f, 0x80, 0x28, 0x8a, 0x82, 0x1a, 0x57, 0x91, 0x16, 0xec, 0x6d, 0xad, 0x2b, 0x3b, 0x31, 0x0d, 0xa9, 0x03, 0x40, 0x1a, 0xa6, 0x21, 0x00, 0xab, 0x5d, 0x1a, 0x36, 0x55, 0x3e, 0x06, 0x20, 0x3b, 0x33, 0x89, 0x0c, 0xc9, 0xb8, 0x32, 0xf7, 0x9e, 0xf8, 0x05, 0x60, 0xcc, 0xb9, 0xa3, 0x9c, 0xe7, 0x67, 0x96, 0x7e, 0xd6, 0x28, 0xc6, 0xad, 0x57, 0x3c, 0xb1, 0x16, 0xdb, 0xef, 0xef, 0xd7, 0x54, 0x99, 0xda, 0x96, 0xbd, 0x68, 0xa8, 0xa9, 0x7b, 0x92, 0x8a, 0x8b, 0xbc, 0x10, 0x3b, 0x66, 0x21, 0xfc, 0xde, 0x2b, 0xec, 0xa1, 0x23, 0x1d, 0x20, 0x6b, 0xe6, 0xcd, 0x9e, 0xc7, 0xaf, 0xf6, 0xf6, 0xc9, 0x4f, 0xcd, 0x72, 0x04, 0xed, 0x34, 0x55, 0xc6, 0x8c, 0x83, 0xf4, 0xa4, 0x1d, 0xa4, 0xaf, 0x2b, 0x74, 0xef, 0x5c, 0x53, 0xf1, 0xd8, 0xac, 0x70, 0xbd, 0xcb, 0x7e, 0xd1, 0x85, 0xce, 0x81, 0xbd, 0x84, 0x35, 0x9d, 0x44, 0x25, 0x4d, 0x95, 0x62, 0x9e, 0x98, 0x55, 0xa9, 0x4a, 0x7c, 0x19, 0x58, 0xd1, 0xf8, 0xad, 0xa5, 0xd0, 0x53, 0x2e, 0xd8, 0xa5, 0xaa, 0x3f, 0xb2, 0xd1, 0x7b, 0xa7, 0x0e, 0xb6, 0x24, 0x8e, 0x59, 0x4e, 0x1a, 0x22, 0x97, 0xac, 0xbb, 0xb3, 0x9d, 0x50, 0x2f, 0x1a, 0x8c, 0x6e, 0xb6, 0xf1, 0xce, 0x22, 0xb3, 0xde, 0x1a, 0x1f, 0x40, 0xcc, 0x24, 0x55, 0x41, 0x19, 0xa8, 0x31, 0xa9, 0xaa, 0xd6, 0x07, 0x9c, 0xad, 0x88, 0x42, 0x5d, 0xe6, 0xbd, 0xe1, 0xa9, 0x18, 0x7e, 0xbb, 0x60, 0x92, 0xcf, 0x67, 0xbf, 0x2b, 0x13, 0xfd, 0x65, 0xf2, 0x70, 0x88, 0xd7, 0x8b, 0x7e, 0x88, 0x3c, 0x87, 0x59, 0xd2, 0xc4, 0xf5, 0xc6, 0x5a, 0xdb, 0x75, 0x53, 0x87, 0x8a, 0xd5, 0x75, 0xf9, 0xfa, 0xd8, 0x78, 0xe8, 0x0a, 0x0c, 0x9b, 0xa6, 0x3b, 0xcb, 0xcc, 0x27, 0x32, 0xe6, 0x94, 0x85, 0xbb, 0xc9, 0xc9, 0x0b, 0xfb, 0xd6, 0x24, 0x81, 0xd9, 0x08, 0x9b, 0xec, 0xcf, 0x80, 0xcf, 0xe2, 0xdf, 0x16, 0xa2, 0xcf, 0x65, 0xbd, 0x92, 0xdd, 0x59, 0x7b, 0x07, 0x07, 0xe0, 0x91, 0x7a, 0xf4, 0x8b, 0xbb, 0x75, 0xfe, 0xd4, 0x13, 0xd2, 0x38, 0xf5, 0x55, 0x5a, 0x7a, 0x56, 0x9d, 0x80, 0xc3, 0x41, 0x4a, 0x8d, 0x08, 0x59, 0xdc, 0x65, 0xa4, 0x61, 0x28, 0xba, 0xb2, 0x7a, 0xf8, 0x7a, 0x71, 0x31, 0x4f, 0x31, 0x8c, 0x78, 0x2b, 0x23, 0xeb, 0xfe, 0x80, 0x8b, 0x82, 0xb0, 0xce, 0x26, 0x40, 0x1d, 0x2e, 0x22, 0xf0, 0x4d, 0x83, 0xd1, 0x25, 0x5d, 0xc5, 0x1a, 0xdd, 0xd3, 0xb7, 0x5a, 0x2b, 0x1a, 0xe0, 0x78, 0x45, 0x04, 0xdf, 0x54, 0x3a, 0xf8, 0x96, 0x9b, 0xe3, 0xea, 0x70, 0x82, 0xff, 0x7f, 0xc9, 0x88, 0x8c, 0x14, 0x4d, 0xa2, 0xaf, 0x58, 0x42, 0x9e, 0xc9, 0x60, 0x31, 0xdb, 0xca, 0xd3, 0xda, 0xd9, 0xaf, 0x0d, 0xcb, 0xaa, 0xaf, 0x26, 0x8c, 0xb8, 0xfc, 0xff, 0xea, 0xd9, 0x4f, 0x3c, 0x7c, 0xa4, 0x95, 0xe0, 0x56, 0xa9, 0xb4, 0x7a, 0xcd, 0xb7, 0x51, 0xfb, 0x73, 0xe6, 0x66, 0xc6, 0xc6, 0x55, 0xad, 0xe8, 0x29, 0x72, 0x97, 0xd0, 0x7a, 0xd1, 0xba, 0x5e, 0x43, 0xf1, 0xbc, 0xa3, 0x23, 0x01, 0x65, 0x13, 0x39, 0xe2, 0x29, 0x04, 0xcc, 0x8c, 0x42, 0xf5, 0x8c, 0x30, 0xc0, 0x4a, 0xaf, 0xdb, 0x03, 0x8d, 0xda, 0x08, 0x47, 0xdd, 0x98, 0x8d, 0xcd, 0xa6, 0xf3, 0xbf, 0xd1, 0x5c, 0x4b, 0x4c, 0x45, 0x25, 0x00, 0x4a, 0xa0, 0x6e, 0xef, 0xf8, 0xca, 0x61, 0x78, 0x3a, 0xac, 0xec, 0x57, 0xfb, 0x3d, 0x1f, 0x92, 0xb0, 0xfe, 0x2f, 0xd1, 0xa8, 0x5f, 0x67, 0x24, 0x51, 0x7b, 0x65, 0xe6, 0x14, 0xad, 0x68, 0x08, 0xd6, 0xf6, 0xee, 0x34, 0xdf, 0xf7, 0x31, 0x0f, 0xdc, 0x82, 0xae, 0xbf, 0xd9, 0x04, 0xb0, 0x1e, 0x1d, 0xc5, 0x4b, 0x29, 0x27, 0x09, 0x4b, 0x2d, 0xb6, 0x8d, 0x6f, 0x90, 0x3b, 0x68, 0x40, 0x1a, 0xde, 0xbf, 0x5a, 0x7e, 0x08, 0xd7, 0x8f, 0xf4, 0xef, 0x5d, 0x63, 0x65, 0x3a, 0x65, 0x04, 0x0c, 0xf9, 0xbf, 0xd4, 0xac, 0xa7, 0x98, 0x4a, 0x74, 0xd3, 0x71, 0x45, 0x98, 0x67, 0x80, 0xfc, 0x0b, 0x16, 0xac, 0x45, 0x16, 0x49, 0xde, 0x61, 0x88, 0xa7, 0xdb, 0xdf, 0x19, 0x1f, 0x64, 0xb5, 0xfc, 0x5e, 0x2a, 0xb4, 0x7b, 0x57, 0xf7, 0xf7, 0x27, 0x6c, 0xd4, 0x19, 0xc1, 0x7a, 0x3c, 0xa8, 0xe1, 0xb9, 0x39, 0xae, 0x49, 0xe4, 0x88, 0xac, 0xba, 0x6b, 0x96, 0x56, 0x10, 0xb5, 0x48, 0x01, 0x09, 0xc8, 0xb1, 0x7b, 0x80, 0xe1, 0xb7, 0xb7, 0x50, 0xdf, 0xc7, 0x59, 0x8d, 0x5d, 0x50, 0x11, 0xfd, 0x2d, 0xcc, 0x56, 0x00, 0xa3, 0x2e, 0xf5, 0xb5, 0x2a, 0x1e, 0xcc, 0x82, 0x0e, 0x30, 0x8a, 0xa3, 0x42, 0x72, 0x1a, 0xac, 0x09, 0x43, 0xbf, 0x66, 0x86, 0xb6, 0x4b, 0x25, 0x79, 0x37, 0x65, 0x04, 0xcc, 0xc4, 0x93, 0xd9, 0x7e, 0x6a, 0xed, 0x3f, 0xb0, 0xf9, 0xcd, 0x71, 0xa4, 0x3d, 0xd4, 0x97, 0xf0, 0x1f, 0x17, 0xc0, 0xe2, 0xcb, 0x37, 0x97, 0xaa, 0x2a, 0x2f, 0x25, 0x66, 0x56, 0x16, 0x8e, 0x6c, 0x49, 0x6a, 0xfc, 0x5f, 0xb9, 0x32, 0x46, 0xf6, 0xb1, 0x11, 0x63, 0x98, 0xa3, 0x46, 0xf1, 0xa6, 0x41, 0xf3, 0xb0, 0x41, 0xe9, 0x89, 0xf7, 0x91, 0x4f, 0x90, 0xcc, 0x2c, 0x7f, 0xff, 0x35, 0x78, 0x76, 0xe5, 0x06, 0xb5, 0x0d, 0x33, 0x4b, 0xa7, 0x7c, 0x22, 0x5b, 0xc3, 0x07, 0xba, 0x53, 0x71, 0x52, 0xf3, 0xf1, 0x61, 0x0e, 0x4e, 0xaf, 0xe5, 0x95, 0xf6, 0xd9, 0xd9, 0x0d, 0x11, 0xfa, 0xa9, 0x33, 0xa1, 0x5e, 0xf1, 0x36, 0x95, 0x46, 0x86, 0x8a, 0x7f, 0x3a, 0x45, 0xa9, 0x67, 0x68, 0xd4, 0x0f, 0xd9, 0xd0, 0x34, 0x12, 0xc0, 0x91, 0xc6, 0x31, 0x5c, 0xf4, 0xfd, 0xe7, 0xcb, 0x68, 0x60, 0x69, 0x37, 0x38, 0x0d, 0xb2, 0xea, 0xaa, 0x70, 0x7b, 0x4c, 0x41, 0x85, 0xc3, 0x2e, 0xdd, 0xcd, 0xd3, 0x06, 0x70, 0x5e, 0x4d, 0xc1, 0xff, 0xc8, 0x72, 0xee, 0xee, 0x47, 0x5a, 0x64, 0xdf, 0xac, 0x86, 0xab, 0xa4, 0x1c, 0x06, 0x18, 0x98, 0x3f, 0x87, 0x41, 0xc5, 0xef, 0x68, 0xd3, 0xa1, 0x01, 0xe8, 0xa3, 0xb8, 0xca, 0xc6, 0x0c, 0x90, 0x5c, 0x15, 0xfc, 0x91, 0x08, 0x40, 0xb9, 0x4c, 0x00, 0xa0, 0xb9, 0xd0, }, .message_len = 1023, .signature = { 0x0a, 0xab, 0x4c, 0x90, 0x05, 0x01, 0xb3, 0xe2, 0x4d, 0x7c, 0xdf, 0x46, 0x63, 0x32, 0x6a, 0x3a, 0x87, 0xdf, 0x5e, 0x48, 0x43, 0xb2, 0xcb, 0xdb, 0x67, 0xcb, 0xf6, 0xe4, 0x60, 0xfe, 0xc3, 0x50, 0xaa, 0x53, 0x71, 0xb1, 0x50, 0x8f, 0x9f, 0x45, 0x28, 0xec, 0xea, 0x23, 0xc4, 0x36, 0xd9, 0x4b, 0x5e, 0x8f, 0xcd, 0x4f, 0x68, 0x1e, 0x30, 0xa6, 0xac, 0x00, 0xa9, 0x70, 0x4a, 0x18, 0x8a, 0x03, }, }, { .sec_key = { 0x83, 0x3f, 0xe6, 0x24, 0x09, 0x23, 0x7b, 0x9d, 0x62, 0xec, 0x77, 0x58, 0x75, 0x20, 0x91, 0x1e, 0x9a, 0x75, 0x9c, 0xec, 0x1d, 0x19, 0x75, 0x5b, 0x7d, 0xa9, 0x01, 0xb9, 0x6d, 0xca, 0x3d, 0x42, }, .pub_key = { 0xec, 0x17, 0x2b, 0x93, 0xad, 0x5e, 0x56, 0x3b, 0xf4, 0x93, 0x2c, 0x70, 0xe1, 0x24, 0x50, 0x34, 0xc3, 0x54, 0x67, 0xef, 0x2e, 0xfd, 0x4d, 0x64, 0xeb, 0xf8, 0x19, 0x68, 0x34, 0x67, 0xe2, 0xbf, }, .message = { 0xdd, 0xaf, 0x35, 0xa1, 0x93, 0x61, 0x7a, 0xba, 0xcc, 0x41, 0x73, 0x49, 0xae, 0x20, 0x41, 0x31, 0x12, 0xe6, 0xfa, 0x4e, 0x89, 0xa9, 0x7e, 0xa2, 0x0a, 0x9e, 0xee, 0xe6, 0x4b, 0x55, 0xd3, 0x9a, 0x21, 0x92, 0x99, 0x2a, 0x27, 0x4f, 0xc1, 0xa8, 0x36, 0xba, 0x3c, 0x23, 0xa3, 0xfe, 0xeb, 0xbd, 0x45, 0x4d, 0x44, 0x23, 0x64, 0x3c, 0xe8, 0x0e, 0x2a, 0x9a, 0xc9, 0x4f, 0xa5, 0x4c, 0xa4, 0x9f, }, .message_len = 64, .signature = { 0xdc, 0x2a, 0x44, 0x59, 0xe7, 0x36, 0x96, 0x33, 0xa5, 0x2b, 0x1b, 0xf2, 0x77, 0x83, 0x9a, 0x00, 0x20, 0x10, 0x09, 0xa3, 0xef, 0xbf, 0x3e, 0xcb, 0x69, 0xbe, 0xa2, 0x18, 0x6c, 0x26, 0xb5, 0x89, 0x09, 0x35, 0x1f, 0xc9, 0xac, 0x90, 0xb3, 0xec, 0xfd, 0xfb, 0xc7, 0xc6, 0x64, 0x31, 0xe0, 0x30, 0x3d, 0xca, 0x17, 0x9c, 0x13, 0x8a, 0xc1, 0x7a, 0xd9, 0xbe, 0xf1, 0x17, 0x73, 0x31, 0xa7, 0x04, }, }, }; const size_t num_testvectors = sizeof(testvectors) / sizeof(testvectors[0]); static int test_ED25519_verify(void) { size_t i; int failed = 0; for (i = 0; i < num_testvectors; i++) { const struct testvector *tc = &testvectors[i]; if (!ED25519_verify(tc->message, tc->message_len, tc->signature, tc->pub_key)) { warnx("failed verification in test case %zu", i); failed = 1; } } return failed; } static int test_ED25519_sign(void) { size_t i; int failed = 0; for (i = 0; i < num_testvectors; i++) { const struct testvector *tc = &testvectors[i]; uint8_t signature[64]; if (!ED25519_sign(signature, tc->message, tc->message_len, tc->pub_key, tc->sec_key)) { warnx("failed signature in test case %zu", i); failed = 1; } if (memcmp(tc->signature, signature, sizeof signature) != 0) { warnx("signature mismatch in test case %zu", i); failed = 1; } } return failed; } static void hexdump(const unsigned char *buf, size_t len) { size_t i; for (i = 1; i <= len; i++) fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n"); if (len % 8) fprintf(stderr, "\n"); } static void dump_info(const uint8_t *message, size_t message_len, const uint8_t *public_key, const uint8_t *private_key, const uint8_t *signature) { fprintf(stderr, "message:\n"); hexdump(message, message_len); fprintf(stderr, "public key:\n"); hexdump(public_key, ED25519_PUBLIC_KEY_LENGTH); fprintf(stderr, "private key:\n"); hexdump(private_key, ED25519_PRIVATE_KEY_LENGTH); if (signature != NULL) { fprintf(stderr, "signature:\n"); hexdump(signature, ED25519_SIGNATURE_LENGTH); } } /* * Little-endian representation of the order of edwards25519, * see https://www.rfc-editor.org/rfc/rfc7748#section-4.1 */ static const uint8_t order[] = { 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58, 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, }; /* * Modify signature by adding the group order to the upper half of the * signature. This is caught by the check added in curve25519.c r1.14. */ static void modify_signature(uint8_t *signature) { uint16_t sum; uint8_t *upper_half = &signature[32]; uint16_t carry = 0; size_t i; for (i = 0; i < sizeof(order); i++) { sum = carry + order[i] + upper_half[i]; carry = (sum > 0xff); upper_half[i] = sum & 0xff; } /* carry == 0 since 0 <= upper_half < order and 2 * order < 2^256. */ } static int test_ED25519_signature_malleability(void) { uint8_t public_key[ED25519_PUBLIC_KEY_LENGTH]; uint8_t private_key[ED25519_PRIVATE_KEY_LENGTH]; uint8_t message[32]; uint8_t signature[ED25519_SIGNATURE_LENGTH]; int failed = 1; ED25519_keypair(public_key, private_key); arc4random_buf(message, sizeof(message)); if (!ED25519_sign(signature, message, sizeof(message), public_key, private_key)) { fprintf(stderr, "Failed to sign random message\n"); dump_info(message, sizeof(message), public_key, private_key, NULL); goto err; } if (!ED25519_verify(message, sizeof(message), signature, public_key)) { fprintf(stderr, "Failed to verify random message\n"); dump_info(message, sizeof(message), public_key, private_key, signature); goto err; } modify_signature(signature); if (ED25519_verify(message, sizeof(message), signature, public_key)) { fprintf(stderr, "Verified with modified signature\n"); dump_info(message, sizeof(message), public_key, private_key, signature); goto err; } failed = 0; err: return failed; } int main(int argc, char *argv[]) { int failed = 0; failed |= test_ED25519_verify(); failed |= test_ED25519_sign(); failed |= test_ED25519_signature_malleability(); return failed; }