35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
# file: rsasign.py
|
|
|
|
import wolfssl
|
|
|
|
|
|
# start Random Number Generator
|
|
rng = wolfssl.GetRng()
|
|
if rng == None:
|
|
print "Couldn't get an RNG"
|
|
exit(-1)
|
|
|
|
# load RSA private key in DER format
|
|
key = wolfssl.GetRsaPrivateKey("../certs/client-key.der")
|
|
if key == None:
|
|
print "Couldn't load DER private key file"
|
|
exit(-1)
|
|
|
|
# Make byte Arrays and fill input
|
|
signOutput = wolfssl.byteArray(128) # 128 allows 1024 bit private key
|
|
signStr = wolfssl.byteArray(25) # input can't be larger then key size
|
|
# 64 for 512 bit 128 for 1024 bit
|
|
wolfssl.FillSignStr(signStr, "Everybody gets Friday off", 25)
|
|
|
|
# Do RSA Sign
|
|
signedSize = wolfssl.RsaSSL_Sign(signStr, 25, signOutput, 128, key, rng)
|
|
|
|
# Show output
|
|
print "Signed Size = ", signedSize, " signed array = ", wolfssl.cdata(signOutput, signedSize)
|
|
|
|
# let's verify this worked
|
|
signVerify = wolfssl.byteArray(signedSize)
|
|
verifySize = wolfssl.RsaSSL_Verify(signOutput, signedSize, signVerify, signedSize, key)
|
|
|
|
print "Verify Size = ", verifySize, " verify array = ", wolfssl.cdata(signVerify, verifySize)
|
|
|