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Add simple RSA sign and verify examples

pull/110/head
Sean Parkinson 2018-11-07 09:30:35 +10:00
parent a01f3eec59
commit a53a5b1a38
10 changed files with 647 additions and 0 deletions
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6
.gitignore vendored
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@ -100,6 +100,8 @@ btle/ecc-server
signature/sigtest/wolfsigtest
signature/sigtest/opensigtest
signature/firmware_sign/eccsign
signature/rsa_buffer/sign
signature/rsa_buffer/verify
ecc/ecc-key-decode
ecc/ecc-sign
@ -109,3 +111,7 @@ pkcs7/pkcs7-verify
*.dSYM
certmanager/certloadverifybuffer
certmanager/certverify
rsa/sign
rsa/verify

16
signature/README.md
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@ -37,4 +37,20 @@ formatted files.
importing the public and private keys. App will then sign a msg with the
private key and verify that signature using the public key
------------------ UPDATE -----------------
November 13 2018:
Added rsa_buffer directory
rsa_buffer directory contains:
1. App "sign.c" to generate a signature using a DER encoded private key into a
buffer. Prints out a hex encoding of signature.
2. App "verify.c" to verify a signature using a DER encoded public key in and
binary signature in buffers.
3. Script sign_vfy.sh builds sign, creates a signature with "sign", builds
verify with message and signature generated and verifies the signature with
"verify".

36
signature/rsa_buffer/Makefile 100644
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@ -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)

28
signature/rsa_buffer/README 100644
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@ -0,0 +1,28 @@
Configure and install wolfSSL with these options:
./configure
make
make install
(if any build issues due to previous installations please run 'ldconfig`)
To compile without Makefile:
gcc -o sign sign.c -lwolfssl
./sign <message> > signature.h
gcc -o verify verify.c -lwolfssl
To sign a message:
./sign <message>
To verify the signature with the message:
./verify
Best wishes in all your testing!
- The wolfSSL Team

151
signature/rsa_buffer/rsa_priv_2048.h 100644
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@ -0,0 +1,151 @@
/* rsa_priv_2048.h
*
* 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
*/
/* This file contains an RSA 2048-bit private key.
* It is the private counterpart to "rsa_pub_2048.h"
*/
/* RSA private key to sign with.
* Key is PKCS#1 formatted and DER encoded.
*/
static const unsigned char private_key_2048[] = {
0x30, 0x82, 0x04, 0xA4, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01,
0x01, 0x00, 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, 0x02, 0x03,
0x01, 0x00, 0x01, 0x02, 0x82, 0x01, 0x01, 0x00, 0xA2, 0xE6,
0xD8, 0x5F, 0x10, 0x71, 0x64, 0x08, 0x9E, 0x2E, 0x6D, 0xD1,
0x6D, 0x1E, 0x85, 0xD2, 0x0A, 0xB1, 0x8C, 0x47, 0xCE, 0x2C,
0x51, 0x6A, 0xA0, 0x12, 0x9E, 0x53, 0xDE, 0x91, 0x4C, 0x1D,
0x6D, 0xEA, 0x59, 0x7B, 0xF2, 0x77, 0xAA, 0xD9, 0xC6, 0xD9,
0x8A, 0xAB, 0xD8, 0xE1, 0x16, 0xE4, 0x63, 0x26, 0xFF, 0xB5,
0x6C, 0x13, 0x59, 0xB8, 0xE3, 0xA5, 0xC8, 0x72, 0x17, 0x2E,
0x0C, 0x9F, 0x6F, 0xE5, 0x59, 0x3F, 0x76, 0x6F, 0x49, 0xB1,
0x11, 0xC2, 0x5A, 0x2E, 0x16, 0x29, 0x0D, 0xDE, 0xB7, 0x8E,
0xDC, 0x40, 0xD5, 0xA2, 0xEE, 0xE0, 0x1E, 0xA1, 0xF4, 0xBE,
0x97, 0xDB, 0x86, 0x63, 0x96, 0x14, 0xCD, 0x98, 0x09, 0x60,
0x2D, 0x30, 0x76, 0x9C, 0x3C, 0xCD, 0xE6, 0x88, 0xEE, 0x47,
0x92, 0x79, 0x0B, 0x5A, 0x00, 0xE2, 0x5E, 0x5F, 0x11, 0x7C,
0x7D, 0xF9, 0x08, 0xB7, 0x20, 0x06, 0x89, 0x2A, 0x5D, 0xFD,
0x00, 0xAB, 0x22, 0xE1, 0xF0, 0xB3, 0xBC, 0x24, 0xA9, 0x5E,
0x26, 0x0E, 0x1F, 0x00, 0x2D, 0xFE, 0x21, 0x9A, 0x53, 0x5B,
0x6D, 0xD3, 0x2B, 0xAB, 0x94, 0x82, 0x68, 0x43, 0x36, 0xD8,
0xF6, 0x2F, 0xC6, 0x22, 0xFC, 0xB5, 0x41, 0x5D, 0x0D, 0x33,
0x60, 0xEA, 0xA4, 0x7D, 0x7E, 0xE8, 0x4B, 0x55, 0x91, 0x56,
0xD3, 0x5C, 0x57, 0x8F, 0x1F, 0x94, 0x17, 0x2F, 0xAA, 0xDE,
0xE9, 0x9E, 0xA8, 0xF4, 0xCF, 0x8A, 0x4C, 0x8E, 0xA0, 0xE4,
0x56, 0x73, 0xB2, 0xCF, 0x4F, 0x86, 0xC5, 0x69, 0x3C, 0xF3,
0x24, 0x20, 0x8B, 0x5C, 0x96, 0x0C, 0xFA, 0x6B, 0x12, 0x3B,
0x9A, 0x67, 0xC1, 0xDF, 0xC6, 0x96, 0xB2, 0xA5, 0xD5, 0x92,
0x0D, 0x9B, 0x09, 0x42, 0x68, 0x24, 0x10, 0x45, 0xD4, 0x50,
0xE4, 0x17, 0x39, 0x48, 0xD0, 0x35, 0x8B, 0x94, 0x6D, 0x11,
0xDE, 0x8F, 0xCA, 0x59, 0x02, 0x81, 0x81, 0x00, 0xEA, 0x24,
0xA7, 0xF9, 0x69, 0x33, 0xE9, 0x71, 0xDC, 0x52, 0x7D, 0x88,
0x21, 0x28, 0x2F, 0x49, 0xDE, 0xBA, 0x72, 0x16, 0xE9, 0xCC,
0x47, 0x7A, 0x88, 0x0D, 0x94, 0x57, 0x84, 0x58, 0x16, 0x3A,
0x81, 0xB0, 0x3F, 0xA2, 0xCF, 0xA6, 0x6C, 0x1E, 0xB0, 0x06,
0x29, 0x00, 0x8F, 0xE7, 0x77, 0x76, 0xAC, 0xDB, 0xCA, 0xC7,
0xD9, 0x5E, 0x9B, 0x3F, 0x26, 0x90, 0x52, 0xAE, 0xFC, 0x38,
0x90, 0x00, 0x14, 0xBB, 0xB4, 0x0F, 0x58, 0x94, 0xE7, 0x2F,
0x6A, 0x7E, 0x1C, 0x4F, 0x41, 0x21, 0xD4, 0x31, 0x59, 0x1F,
0x4E, 0x8A, 0x1A, 0x8D, 0xA7, 0x57, 0x6C, 0x22, 0xD8, 0xE5,
0xF4, 0x7E, 0x32, 0xA6, 0x10, 0xCB, 0x64, 0xA5, 0x55, 0x03,
0x87, 0xA6, 0x27, 0x05, 0x8C, 0xC3, 0xD7, 0xB6, 0x27, 0xB2,
0x4D, 0xBA, 0x30, 0xDA, 0x47, 0x8F, 0x54, 0xD3, 0x3D, 0x8B,
0x84, 0x8D, 0x94, 0x98, 0x58, 0xA5, 0x02, 0x81, 0x81, 0x00,
0xD5, 0x38, 0x1B, 0xC3, 0x8F, 0xC5, 0x93, 0x0C, 0x47, 0x0B,
0x6F, 0x35, 0x92, 0xC5, 0xB0, 0x8D, 0x46, 0xC8, 0x92, 0x18,
0x8F, 0xF5, 0x80, 0x0A, 0xF7, 0xEF, 0xA1, 0xFE, 0x80, 0xB9,
0xB5, 0x2A, 0xBA, 0xCA, 0x18, 0xB0, 0x5D, 0xA5, 0x07, 0xD0,
0x93, 0x8D, 0xD8, 0x9C, 0x04, 0x1C, 0xD4, 0x62, 0x8E, 0xA6,
0x26, 0x81, 0x01, 0xFF, 0xCE, 0x8A, 0x2A, 0x63, 0x34, 0x35,
0x40, 0xAA, 0x6D, 0x80, 0xDE, 0x89, 0x23, 0x6A, 0x57, 0x4D,
0x9E, 0x6E, 0xAD, 0x93, 0x4E, 0x56, 0x90, 0x0B, 0x6D, 0x9D,
0x73, 0x8B, 0x0C, 0xAE, 0x27, 0x3D, 0xDE, 0x4E, 0xF0, 0xAA,
0xC5, 0x6C, 0x78, 0x67, 0x6C, 0x94, 0x52, 0x9C, 0x37, 0x67,
0x6C, 0x2D, 0xEF, 0xBB, 0xAF, 0xDF, 0xA6, 0x90, 0x3C, 0xC4,
0x47, 0xCF, 0x8D, 0x96, 0x9E, 0x98, 0xA9, 0xB4, 0x9F, 0xC5,
0xA6, 0x50, 0xDC, 0xB3, 0xF0, 0xFB, 0x74, 0x17, 0x02, 0x81,
0x80, 0x5E, 0x83, 0x09, 0x62, 0xBD, 0xBA, 0x7C, 0xA2, 0xBF,
0x42, 0x74, 0xF5, 0x7C, 0x1C, 0xD2, 0x69, 0xC9, 0x04, 0x0D,
0x85, 0x7E, 0x3E, 0x3D, 0x24, 0x12, 0xC3, 0x18, 0x7B, 0xF3,
0x29, 0xF3, 0x5F, 0x0E, 0x76, 0x6C, 0x59, 0x75, 0xE4, 0x41,
0x84, 0x69, 0x9D, 0x32, 0xF3, 0xCD, 0x22, 0xAB, 0xB0, 0x35,
0xBA, 0x4A, 0xB2, 0x3C, 0xE5, 0xD9, 0x58, 0xB6, 0x62, 0x4F,
0x5D, 0xDE, 0xE5, 0x9E, 0x0A, 0xCA, 0x53, 0xB2, 0x2C, 0xF7,
0x9E, 0xB3, 0x6B, 0x0A, 0x5B, 0x79, 0x65, 0xEC, 0x6E, 0x91,
0x4E, 0x92, 0x20, 0xF6, 0xFC, 0xFC, 0x16, 0xED, 0xD3, 0x76,
0x0C, 0xE2, 0xEC, 0x7F, 0xB2, 0x69, 0x13, 0x6B, 0x78, 0x0E,
0x5A, 0x46, 0x64, 0xB4, 0x5E, 0xB7, 0x25, 0xA0, 0x5A, 0x75,
0x3A, 0x4B, 0xEF, 0xC7, 0x3C, 0x3E, 0xF7, 0xFD, 0x26, 0xB8,
0x20, 0xC4, 0x99, 0x0A, 0x9A, 0x73, 0xBE, 0xC3, 0x19, 0x02,
0x81, 0x81, 0x00, 0xBA, 0x44, 0x93, 0x14, 0xAC, 0x34, 0x19,
0x3B, 0x5F, 0x91, 0x60, 0xAC, 0xF7, 0xB4, 0xD6, 0x81, 0x05,
0x36, 0x51, 0x53, 0x3D, 0xE8, 0x65, 0xDC, 0xAF, 0x2E, 0xDC,
0x61, 0x3E, 0xC9, 0x7D, 0xB8, 0x7F, 0x87, 0xF0, 0x3B, 0x9B,
0x03, 0x82, 0x29, 0x37, 0xCE, 0x72, 0x4E, 0x11, 0xD5, 0xB1,
0xC1, 0x0C, 0x07, 0xA0, 0x99, 0x91, 0x4A, 0x8D, 0x7F, 0xEC,
0x79, 0xCF, 0xF1, 0x39, 0xB5, 0xE9, 0x85, 0xEC, 0x62, 0xF7,
0xDA, 0x7D, 0xBC, 0x64, 0x4D, 0x22, 0x3C, 0x0E, 0xF2, 0xD6,
0x51, 0xF5, 0x87, 0xD8, 0x99, 0xC0, 0x11, 0x20, 0x5D, 0x0F,
0x29, 0xFD, 0x5B, 0xE2, 0xAE, 0xD9, 0x1C, 0xD9, 0x21, 0x56,
0x6D, 0xFC, 0x84, 0xD0, 0x5F, 0xED, 0x10, 0x15, 0x1C, 0x18,
0x21, 0xE7, 0xC4, 0x3D, 0x4B, 0xD7, 0xD0, 0x9E, 0x6A, 0x95,
0xCF, 0x22, 0xC9, 0x03, 0x7B, 0x9E, 0xE3, 0x60, 0x01, 0xFC,
0x2F, 0x02, 0x81, 0x80, 0x11, 0xD0, 0x4B, 0xCF, 0x1B, 0x67,
0xB9, 0x9F, 0x10, 0x75, 0x47, 0x86, 0x65, 0xAE, 0x31, 0xC2,
0xC6, 0x30, 0xAC, 0x59, 0x06, 0x50, 0xD9, 0x0F, 0xB5, 0x70,
0x06, 0xF7, 0xF0, 0xD3, 0xC8, 0x62, 0x7C, 0xA8, 0xDA, 0x6E,
0xF6, 0x21, 0x3F, 0xD3, 0x7F, 0x5F, 0xEA, 0x8A, 0xAB, 0x3F,
0xD9, 0x2A, 0x5E, 0xF3, 0x51, 0xD2, 0xC2, 0x30, 0x37, 0xE3,
0x2D, 0xA3, 0x75, 0x0D, 0x1E, 0x4D, 0x21, 0x34, 0xD5, 0x57,
0x70, 0x5C, 0x89, 0xBF, 0x72, 0xEC, 0x4A, 0x6E, 0x68, 0xD5,
0xCD, 0x18, 0x74, 0x33, 0x4E, 0x8C, 0x3A, 0x45, 0x8F, 0xE6,
0x96, 0x40, 0xEB, 0x63, 0xF9, 0x19, 0x86, 0x3A, 0x51, 0xDD,
0x89, 0x4B, 0xB0, 0xF3, 0xF9, 0x9F, 0x5D, 0x28, 0x95, 0x38,
0xBE, 0x35, 0xAB, 0xCA, 0x5C, 0xE7, 0x93, 0x53, 0x34, 0xA1,
0x45, 0x5D, 0x13, 0x39, 0x65, 0x42, 0x46, 0xA1, 0x9F, 0xCD,
0xF5, 0xBF
};

68
signature/rsa_buffer/rsa_pub_2048.h 100644
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@ -0,0 +1,68 @@
/* rsa_pub_2048.h
*
* 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
*/
/* This file contains an RSA 2048-bit public key.
* It is the public counterpart to "rsa_priv_2048.h"
*/
/* RSA public key to verify with.
* Key is PKCS#1 formatted and DER encoded.
*/
static const unsigned char public_key_2048[] = {
0x30, 0x82, 0x01, 0x22, 0x30, 0x0D, 0x06, 0x09,
0x2A, 0x86, 0x48, 0x86, 0xF7, 0x0D, 0x01, 0x01,
0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0F, 0x00,
0x30, 0x82, 0x01, 0x0A, 0x02, 0x82, 0x01, 0x01,
0x00, 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, 0x02, 0x03, 0x01, 0x00, 0x01
};

176
signature/rsa_buffer/sign.c 100644
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/* sign.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
*/
/* This file shows how to sign a message with an RSA private key.
* The signature is PKCS#1.5 formatted.
* Key and data are held in buffers.
* The output of this program can be used with "verify.c".
*/
#include <stdio.h>
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/rsa.h>
#include <wolfssl/wolfcrypt/sha256.h>
#include <wolfssl/wolfcrypt/asn.h>
#include <wolfssl/wolfcrypt/asn_public.h>
#include "rsa_priv_2048.h"
/* Signature size is the length of the modulus of the RSA key */
#define SIG_SZ (2048 / 8)
/* Maximum bound on digest algorithm encoding around digest */
#define MAX_ENC_ALG_SZ 32
/* Print out the buffer in C code.
*
* name [in] Name of the variable.
* data [in] Data to print out.
* len [in] Length of the data.
*/
void print_buffer(char* name, unsigned char* data, word32 len)
{
word32 i;
printf("unsigned char %s[] = {\n", name);
for (i = 0; i < len; i++) {
if ((i % 8) == 0)
printf(" ");
printf(" 0x%02x,", data[i]);
if ((i % 8) == 7)
printf("\n");
}
if ((i % 8) != 0)
printf("\n");
printf("};\n");
}
/* Main entry point.
* Signs the message passed in as the first command line argument.
*
* 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;
#ifdef WC_RSA_BLINDING
WC_RNG rng;
WC_RNG* pRng = NULL;
#endif
word32 idx;
unsigned char* msg;
word32 msgLen;
unsigned char signature[SIG_SZ];
word32 sigLen;
unsigned char digest[WC_SHA256_DIGEST_SIZE];
unsigned char encSig[WC_SHA256_DIGEST_SIZE + MAX_ENC_ALG_SZ];
word32 encSigLen;
/* Get the message to sign from the command line */
if (argc != 2) {
fprintf(stderr, "Message to sign required\n");
ret = -1;
}
else {
msg = (unsigned char*)argv[1];
msgLen = strlen(argv[1]);
}
/* Calculate SHA-256 digest of message */
if (ret == 0)
ret = wc_InitSha256(&sha256);
if (ret == 0) {
pSha256 = &sha256;
ret = wc_Sha256Update(&sha256, msg, msgLen);
}
if (ret == 0)
ret = wc_Sha256Final(&sha256, digest);
/* Encode digest with algorithm information as per PKCS#1.5 */
if (ret == 0) {
encSigLen = wc_EncodeSignature(encSig, digest, sizeof(digest), SHA256h);
if ((int)encSigLen < 0)
ret = (int)encSigLen;
}
/* Initialize RSA key and random (if required) */
if (ret == 0) {
ret = wc_InitRsaKey(&rsaKey, NULL);
if (ret == 0)
pRsaKey = &rsaKey;
}
#ifdef WC_RSA_BLINDING
if (ret == 0)
ret = wc_InitRng(&rng);
#endif
/* Load DER encoded RSA private key from buffer */
if (ret == 0) {
#ifdef WC_RSA_BLINDING
pRng = &rng;
#endif
idx = 0;
ret = wc_RsaPrivateKeyDecode(private_key_2048, &idx, &rsaKey,
sizeof(private_key_2048));
}
/* Sign encoded digest */
if (ret == 0) {
#ifdef WC_RSA_BLINDING
ret = wc_RsaSSL_Sign(encSig, encSigLen, signature, sizeof(signature),
&rsaKey, pRng);
#else
ret = wc_RsaSSL_Sign(encSig, encSigLen, signature, sizeof(signature),
&rsaKey, NULL);
#endif
if (ret >= 0) {
sigLen = ret;
ret = 0;
}
}
if (ret == 0) {
/* Display message as a buffer */
print_buffer("msg", msg, msgLen);
printf("\n");
/* Display binary signature as a buffer */
print_buffer("rsa_sig_2048", signature, sigLen);
}
/* Free data structures */
#ifdef WC_RSA_BLINDING
if (pRng != NULL)
wc_FreeRng(pRng);
#endif
if (pRsaKey != NULL)
wc_FreeRsaKey(pRsaKey);
if (pSha256 != NULL)
wc_Sha256Free(pSha256);
return ret == 0 ? 0 : 1;
}

10
signature/rsa_buffer/sign_vfy.sh 100755
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#!/bin/sh
make clean
make sign
./sign "This is the message" > signature.h
make verify
./verify

40
signature/rsa_buffer/signature.h 100644
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@ -0,0 +1,40 @@
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,
};

116
signature/rsa_buffer/verify.c 100644
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/* rsa_pub_2048.h
*
* 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
*/
/* This file is an example of verifying an RSA signature.
* The signature is PKCS#1.5 formatted.
* Key and data are held in buffers.
* "signature.h", used by this program, can be generated using "sign.c".
*/
#include <wolfssl/options.h>
#include <wolfssl/wolfcrypt/rsa.h>
#include <wolfssl/wolfcrypt/sha256.h>
#include <wolfssl/wolfcrypt/asn.h>
#include <wolfssl/wolfcrypt/asn_public.h>
#include "rsa_pub_2048.h"
#include "signature.h"
/* Maximum bound on digest algorithm encoding around digest */
#define MAX_ENC_ALG_SZ 32
/* 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;
word32 idx;
unsigned char digest[WC_SHA256_DIGEST_SIZE];
unsigned char encSig[WC_SHA256_DIGEST_SIZE + MAX_ENC_ALG_SZ];
word32 encSigLen = 0;
unsigned char* decSig = NULL;
word32 decSigLen = 0;
/* 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, digest);
/* Encode digest with algorithm information as per PKCS#1.5 */
if (ret == 0) {
encSigLen = wc_EncodeSignature(encSig, digest, sizeof(digest), SHA256h);
if ((int)encSigLen < 0)
ret = (int)encSigLen;
}
/* Initialize the RSA key and decode the DER encoded public key. */
if (ret == 0)
ret = wc_InitRsaKey(&rsaKey, NULL);
if (ret == 0) {
pRsaKey = &rsaKey;
idx = 0;
ret = wc_RsaPublicKeyDecode(public_key_2048, &idx, &rsaKey,
sizeof(public_key_2048));
}
/* 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 && encSigLen != decSigLen)
ret = -1;
if (ret == 0 && XMEMCMP(encSig, decSig, encSigLen) != 0)
ret = -1;
/* Report on the verification */
if (ret == 0)
fprintf(stderr, "Verified\n");
else
fprintf(stderr, "Failure\n");
/* Free the data structures */
if (pRsaKey != NULL)
wc_FreeRsaKey(pRsaKey);
if (pSha256 != NULL)
wc_Sha256Free(pSha256);
return ret == 0 ? 0 : 1;
}