History

David Garske b185b89068 Remove execute bits on files.		2019-04-09 09:05:21 -07:00
..
Makefile	Added test tool for checking the ECC maximum signature length. Iterates through each supported curve and loops the sign/verify to determine at run-time the maximum ECC signature size for each curve.	2019-04-09 09:05:21 -07:00
README.md	Added test tool for checking the ECC maximum signature length. Iterates through each supported curve and loops the sign/verify to determine at run-time the maximum ECC signature size for each curve.	2019-04-09 09:05:21 -07:00
opensigtest.c	Remove execute bits on files.	2019-04-09 09:05:21 -07:00
wolfsigtest.c	Remove execute bits on files.	2019-04-09 09:05:21 -07:00

README.md

Signature Test Example

Demonstrates using a hash digest to sign and verify a signature using RSA

Building

Build and install wolfSSL

./configure --enable-certgen --enable-certext && make && sudo make install

Build example

make

Usage

./wolfsigtest
...
Signatures match!

./openssltest

...
CRYPTO: signature verify OK! 1
CRYPTO: EXPECTED signature verify OK! 1

ECC Signature Length Test

Built wolfSSL with: ./configure --enable-ecccustcurves=all && make && sudo make install

./eccsiglentest README.md 
Signature Length Test: Loops 1000
File README.md is 452 bytes
ECC Curve SECP192R1, KeySz 24, Sig: ActMax 56, CalcMax 58
ECC Curve PRIME192V2, KeySz 24, Sig: ActMax 56, CalcMax 58
ECC Curve PRIME192V3, KeySz 24, Sig: ActMax 56, CalcMax 58
ECC Curve PRIME239V1, KeySz 30, Sig: ActMax 66, CalcMax 70
ECC Curve PRIME239V2, KeySz 30, Sig: ActMax 66, CalcMax 70
ECC Curve PRIME239V3, KeySz 30, Sig: ActMax 66, CalcMax 70
ECC Curve SECP256R1, KeySz 32, Sig: ActMax 72, CalcMax 74
ECC Curve SECP112R1, KeySz 14, Sig: ActMax 36, CalcMax 38
ECC Curve SECP112R2, KeySz 14, Sig: ActMax 34, CalcMax 38
ECC Curve SECP128R1, KeySz 16, Sig: ActMax 40, CalcMax 42
ECC Curve SECP128R2, KeySz 16, Sig: ActMax 38, CalcMax 42
ECC Curve SECP160R1, KeySz 20, Sig: ActMax 48, CalcMax 50
ECC Curve SECP160R2, KeySz 20, Sig: ActMax 48, CalcMax 50
ECC Curve SECP224R1, KeySz 28, Sig: ActMax 64, CalcMax 66
ECC Curve SECP384R1, KeySz 48, Sig: ActMax 104, CalcMax 106
ECC Curve SECP521R1, KeySz 66, Sig: ActMax 139, CalcMax 142
ECC Curve SECP160K1, KeySz 20, Sig: ActMax 48, CalcMax 50
ECC Curve SECP192K1, KeySz 24, Sig: ActMax 56, CalcMax 58
ECC Curve SECP224K1, KeySz 28, Sig: ActMax 64, CalcMax 66
ECC Curve SECP256K1, KeySz 32, Sig: ActMax 72, CalcMax 74
ECC Curve BRAINPOOLP160R1, KeySz 20, Sig: ActMax 48, CalcMax 50
ECC Curve BRAINPOOLP192R1, KeySz 24, Sig: ActMax 56, CalcMax 58
ECC Curve BRAINPOOLP224R1, KeySz 28, Sig: ActMax 64, CalcMax 66
ECC Curve BRAINPOOLP256R1, KeySz 32, Sig: ActMax 72, CalcMax 74
ECC Curve BRAINPOOLP320R1, KeySz 40, Sig: ActMax 88, CalcMax 90
ECC Curve BRAINPOOLP384R1, KeySz 48, Sig: ActMax 104, CalcMax 106

Note: The extra 2-bytes of padding is to account for the case where the base ECC key has the Most Significant Bit (MSB) set, which would cause a longer signature.