diff --git a/.gitignore b/.gitignore index 9d040fa3..159a97cb 100644 --- a/.gitignore +++ b/.gitignore @@ -101,6 +101,7 @@ signature/sigtest/opensigtest signature/firmware_sign/eccsign signature/rsa_buffer/sign signature/rsa_buffer/verify +signature/rsa_vfy_only/verify ecc/ecc-key-decode ecc/ecc-key-export diff --git a/signature/rsa_vfy_only/Makefile b/signature/rsa_vfy_only/Makefile new file mode 100644 index 00000000..2273eadf --- /dev/null +++ b/signature/rsa_vfy_only/Makefile @@ -0,0 +1,36 @@ +# RSA Examples Makefile +CC = gcc +LIB_PATH = /usr/local +CFLAGS = -Wall -I$(LIB_PATH)/include +LIBS = -L$(LIB_PATH)/lib -lm + +# option variables +DYN_LIB = -lwolfssl +STATIC_LIB = $(LIB_PATH)/lib/libwolfssl.a +DEBUG_FLAGS = -g -DDEBUG +DEBUG_INC_PATHS = -MD +OPTIMIZE = -Os + +# Options +#CFLAGS+=$(DEBUG_FLAGS) +CFLAGS+=$(OPTIMIZE) +LIBS+=$(STATIC_LIB) +#LIBS+=$(DYN_LIB) + +# build targets +SRC=$(wildcard *.c) +TARGETS=$(patsubst %.c, %, $(SRC)) + +.PHONY: clean all + +all: $(TARGETS) + +debug: CFLAGS+=$(DEBUG_FLAGS) +debug: all + +# build template +%: %.c + $(CC) -o $@ $< $(CFLAGS) $(LIBS) + +clean: + rm -f $(TARGETS) diff --git a/signature/rsa_vfy_only/README b/signature/rsa_vfy_only/README new file mode 100644 index 00000000..472a4a00 --- /dev/null +++ b/signature/rsa_vfy_only/README @@ -0,0 +1,24 @@ +Configure and install wolfSSL with these options: + +./configure --disable-shared --disable-asn --disable-filesystem \ + --enable-cryptonly --enable-sp=smallrsa2048 --enable-sp-math \ + --disable-dh --disable-ecc --disable-sha224 --enable-rsavfy +make +make install + +(if any build issues due to previous installations please run 'ldconfig`) + +To compile without Makefile: + +gcc -Os -o verify verify.c /usr/local/lib/libwolfssl.a + + +To verify the signature with the message: + +./verify + + +Best wishes in all your testing! + +- The wolfSSL Team + diff --git a/signature/rsa_vfy_only/verify.c b/signature/rsa_vfy_only/verify.c new file mode 100644 index 00000000..4f1a2f69 --- /dev/null +++ b/signature/rsa_vfy_only/verify.c @@ -0,0 +1,175 @@ +/* verify.c + * + * Copyright (C) 2006-2018 wolfSSL Inc. + * + * This file is part of wolfSSL. + * + * wolfSSL is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * wolfSSL 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA + */ + +#include +#include +#include +#include + +/* RSA public key to verify with. */ +static const unsigned char public_key_2048_n[] = { + 0xC3, 0x03, 0xD1, 0x2B, 0xFE, 0x39, 0xA4, 0x32, + 0x45, 0x3B, 0x53, 0xC8, 0x84, 0x2B, 0x2A, 0x7C, + 0x74, 0x9A, 0xBD, 0xAA, 0x2A, 0x52, 0x07, 0x47, + 0xD6, 0xA6, 0x36, 0xB2, 0x07, 0x32, 0x8E, 0xD0, + 0xBA, 0x69, 0x7B, 0xC6, 0xC3, 0x44, 0x9E, 0xD4, + 0x81, 0x48, 0xFD, 0x2D, 0x68, 0xA2, 0x8B, 0x67, + 0xBB, 0xA1, 0x75, 0xC8, 0x36, 0x2C, 0x4A, 0xD2, + 0x1B, 0xF7, 0x8B, 0xBA, 0xCF, 0x0D, 0xF9, 0xEF, + 0xEC, 0xF1, 0x81, 0x1E, 0x7B, 0x9B, 0x03, 0x47, + 0x9A, 0xBF, 0x65, 0xCC, 0x7F, 0x65, 0x24, 0x69, + 0xA6, 0xE8, 0x14, 0x89, 0x5B, 0xE4, 0x34, 0xF7, + 0xC5, 0xB0, 0x14, 0x93, 0xF5, 0x67, 0x7B, 0x3A, + 0x7A, 0x78, 0xE1, 0x01, 0x56, 0x56, 0x91, 0xA6, + 0x13, 0x42, 0x8D, 0xD2, 0x3C, 0x40, 0x9C, 0x4C, + 0xEF, 0xD1, 0x86, 0xDF, 0x37, 0x51, 0x1B, 0x0C, + 0xA1, 0x3B, 0xF5, 0xF1, 0xA3, 0x4A, 0x35, 0xE4, + 0xE1, 0xCE, 0x96, 0xDF, 0x1B, 0x7E, 0xBF, 0x4E, + 0x97, 0xD0, 0x10, 0xE8, 0xA8, 0x08, 0x30, 0x81, + 0xAF, 0x20, 0x0B, 0x43, 0x14, 0xC5, 0x74, 0x67, + 0xB4, 0x32, 0x82, 0x6F, 0x8D, 0x86, 0xC2, 0x88, + 0x40, 0x99, 0x36, 0x83, 0xBA, 0x1E, 0x40, 0x72, + 0x22, 0x17, 0xD7, 0x52, 0x65, 0x24, 0x73, 0xB0, + 0xCE, 0xEF, 0x19, 0xCD, 0xAE, 0xFF, 0x78, 0x6C, + 0x7B, 0xC0, 0x12, 0x03, 0xD4, 0x4E, 0x72, 0x0D, + 0x50, 0x6D, 0x3B, 0xA3, 0x3B, 0xA3, 0x99, 0x5E, + 0x9D, 0xC8, 0xD9, 0x0C, 0x85, 0xB3, 0xD9, 0x8A, + 0xD9, 0x54, 0x26, 0xDB, 0x6D, 0xFA, 0xAC, 0xBB, + 0xFF, 0x25, 0x4C, 0xC4, 0xD1, 0x79, 0xF4, 0x71, + 0xD3, 0x86, 0x40, 0x18, 0x13, 0xB0, 0x63, 0xB5, + 0x72, 0x4E, 0x30, 0xC4, 0x97, 0x84, 0x86, 0x2D, + 0x56, 0x2F, 0xD7, 0x15, 0xF7, 0x7F, 0xC0, 0xAE, + 0xF5, 0xFC, 0x5B, 0xE5, 0xFB, 0xA1, 0xBA, 0xD3, +}; + +static const unsigned long public_key_2048_e = 0x010001; + +unsigned char msg[] = { + 0x54, 0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, + 0x74, 0x68, 0x65, 0x20, 0x6d, 0x65, 0x73, 0x73, + 0x61, 0x67, 0x65, +}; + +unsigned char rsa_sig_2048[] = { + 0x41, 0xeb, 0xf5, 0x5e, 0x97, 0x43, 0xf4, 0xd1, + 0xda, 0xb6, 0x5c, 0x75, 0x57, 0x2c, 0xe1, 0x01, + 0x07, 0xdc, 0x42, 0xc4, 0x2d, 0xe2, 0xb5, 0xc8, + 0x63, 0xe8, 0x45, 0x9a, 0x4a, 0xfa, 0xdf, 0x5e, + 0xa6, 0x08, 0x0a, 0x26, 0x2e, 0xca, 0x2c, 0x10, + 0x7a, 0x15, 0x8d, 0xc1, 0x55, 0xcc, 0x33, 0xdb, + 0xb2, 0xef, 0x8b, 0xa6, 0x4b, 0xef, 0xa1, 0xcf, + 0xd3, 0xe2, 0x5d, 0xac, 0x88, 0x86, 0x62, 0x67, + 0x8b, 0x8c, 0x45, 0x7f, 0x10, 0xad, 0xfa, 0x27, + 0x7a, 0x35, 0x5a, 0xf9, 0x09, 0x78, 0x83, 0xba, + 0x18, 0xcb, 0x3e, 0x8e, 0x08, 0xbe, 0x36, 0xde, + 0xac, 0xc1, 0x77, 0x44, 0xe8, 0x43, 0xdb, 0x52, + 0x23, 0x08, 0x36, 0x8f, 0x74, 0x4a, 0xbd, 0xa3, + 0x3f, 0xc1, 0xfb, 0xd6, 0x45, 0x25, 0x61, 0xe2, + 0x19, 0xcb, 0x0b, 0x28, 0xef, 0xca, 0x0a, 0x3b, + 0x7b, 0x3d, 0xe3, 0x47, 0x46, 0x07, 0x1a, 0x7f, + 0xff, 0x38, 0xfd, 0x59, 0x94, 0x0b, 0xeb, 0x00, + 0xab, 0xcc, 0x8c, 0x48, 0x7b, 0xd6, 0x87, 0xb8, + 0x54, 0xb0, 0x2a, 0x07, 0xcf, 0x44, 0x11, 0xd4, + 0xb6, 0x9a, 0x4e, 0x6d, 0x5c, 0x1a, 0xe3, 0xc7, + 0xf3, 0xc7, 0xcb, 0x8e, 0x82, 0x7d, 0xc8, 0x77, + 0xf0, 0xb6, 0xd0, 0x85, 0xcb, 0xdb, 0xd0, 0xb0, + 0xe0, 0xcf, 0xca, 0x3f, 0x17, 0x46, 0x84, 0xcb, + 0x5b, 0xfe, 0x51, 0x3a, 0xaa, 0x71, 0xad, 0xeb, + 0xf1, 0xed, 0x3f, 0xf8, 0xde, 0xb4, 0xa1, 0x26, + 0xdb, 0xc6, 0x8e, 0x70, 0xd4, 0x58, 0xa8, 0x31, + 0xd8, 0xdb, 0xcf, 0x64, 0x4a, 0x5f, 0x1b, 0x89, + 0x22, 0x03, 0x3f, 0xab, 0xb5, 0x6d, 0x2a, 0x63, + 0x2f, 0x4e, 0x7a, 0xe1, 0x89, 0xb4, 0xf0, 0x9a, + 0xb7, 0xd3, 0xd6, 0x0a, 0x10, 0x67, 0x28, 0x25, + 0x6d, 0xda, 0x92, 0x99, 0x3f, 0x64, 0xa7, 0xea, + 0xe0, 0xdc, 0x7c, 0xe8, 0x41, 0xb0, 0xeb, 0x45, +}; + +/* ASN.1 encoding of digest algorithm before hash */ +#define ENC_ALG_SZ 19 + +/* Main entry point. + * Verifies the signature with the message and RSA public key. + * + * argc [in] Count of command line arguments. + * argv [in] Command line argument vector. + * Returns 0 on success and 1 otherwise. + */ +int main(int argc, char* argv[]) +{ + int ret = 0; + Sha256 sha256; + Sha256* pSha256 = NULL; + RsaKey rsaKey; + RsaKey* pRsaKey = NULL; + unsigned char* decSig = NULL; + word32 decSigLen = 0; + unsigned char encSig[ENC_ALG_SZ + WC_SHA256_DIGEST_SIZE] = { + 0x30, 0x31, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, + 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, + 0x00, 0x04, 0x20, 0x00, + }; + + /* Calculate SHA-256 digest of message */ + if (ret == 0) + ret = wc_InitSha256(&sha256); + if (ret == 0) { + pSha256 = &sha256; + ret = wc_Sha256Update(&sha256, msg, sizeof(msg)); + } + if (ret == 0) + ret = wc_Sha256Final(&sha256, encSig + ENC_ALG_SZ); + + /* Initialize the RSA key and decode the DER encoded public key. */ + if (ret == 0) + ret = wc_InitRsaKey(&rsaKey, NULL); + if (ret == 0) { + pRsaKey = &rsaKey; + + ret = mp_read_unsigned_bin(&rsaKey.n, public_key_2048_n, + sizeof(public_key_2048_n)); + } + if (ret == 0) + ret = mp_set_int(&rsaKey.e, public_key_2048_e); + + /* Verify the signature by decrypting the value. */ + if (ret == 0) { + decSigLen = wc_RsaSSL_VerifyInline(rsa_sig_2048, sizeof(rsa_sig_2048), + &decSig, &rsaKey); + if ((int)decSigLen < 0) + ret = (int)decSigLen; + } + + /* Check the decrypted result matches the encoded digest. */ + if (ret == 0 && decSigLen != sizeof(encSig)) + ret = -1; + if (ret == 0 && XMEMCMP(encSig, decSig, decSigLen) != 0) + ret = -1; + + /* Free the data structures */ + if (pRsaKey != NULL) + wc_FreeRsaKey(pRsaKey); + if (pSha256 != NULL) + wc_Sha256Free(pSha256); + + return ret == 0 ? 0 : 1; +} +