89 lines
2.4 KiB
Python
Executable File
89 lines
2.4 KiB
Python
Executable File
import codecs
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from Crypto.PublicKey import RSA
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from Crypto.Cipher import PKCS1_OAEP
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from Crypto.Cipher import KPCS1_V1_5 as V1_5
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from Crypto.Signature import PKCS1_v1_5
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from Crypto.Hash import SHA512, SHA384, SHA256, SHA, MD5
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from Crypto import Random
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from base64 import b64encode, b64decode
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hash = "SHA-256"
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def readPublickey(fname):
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with codecs.open(fname,'r','utf8') as f:
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b = f.read()
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k = RSA.importKey(b)
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return k
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return None
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def readPrivatekey(fname,pwd):
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with codecs.open(fname,'r','utf8') as f:
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b = f.read()
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k = RSA.importKey(b,pwd)
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return k
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return None
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def newkeys(keysize):
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random_generator = Random.new().read
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key = RSA.generate(keysize, random_generator)
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private, public = key, key.publickey()
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return public, private
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def importKey(externKey):
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return RSA.importKey(externKey)
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def getpublickey(priv_key):
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return priv_key.publickey()
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def encrypt(message, pub_key):
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cipher = PKCS1_OAEP.new(pub_key)
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return cipher.encrypt(message)
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def decrypt(ciphertext, priv_key):
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try:
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cipher = PKCS1_OAEP.new(priv_key)
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return cipher.decrypt(ciphertext)
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except Exception as e:
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print('e=',e)
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cipher = V1_5.new(priv_key)
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return cipher.decrypt(ciphertext)
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def sign(message, priv_key, hashAlg = "SHA-256"):
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global hash
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hash = hashAlg
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signer = PKCS1_v1_5.new(priv_key)
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if (hash == "SHA-512"):
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digest = SHA512.new()
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elif (hash == "SHA-384"):
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digest = SHA384.new()
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elif (hash == "SHA-256"):
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digest = SHA256.new()
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elif (hash == "SHA-1"):
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digest = SHA.new()
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else:
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digest = MD5.new()
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digest.update(message)
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return signer.sign(digest)
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def verify(message, signature, pub_key):
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signer = PKCS1_v1_5.new(pub_key)
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if (hash == "SHA-512"):
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digest = SHA512.new()
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elif (hash == "SHA-384"):
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digest = SHA384.new()
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elif (hash == "SHA-256"):
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digest = SHA256.new()
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elif (hash == "SHA-1"):
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digest = SHA.new()
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else:
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digest = MD5.new()
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digest.update(message)
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return signer.verify(digest, signature)
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if __name__ == '__main__':
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cipher="""WaMlLEYnhBk+kTDyN/4OJmQf4ccNdk6USgtKpb7eHsYsotq4iyXi3N5hB1E/PqrPSmca1AMDLUcumwIrLeGLT9it3eTBQgl1YQAsmPxa6lF/rDOZoLbwD5sJ6ab/0/fuM4GbotqN5/d0MeuOSELoo8cFWw+7XpRxn9EMYnw5SzsjDQRWxXjZptoaGa/8pBBkDmgLqINif9EWV+8899xqTd0e9w1Gqb7wbt/elRNVBpgsSuSZb+dtBlvNUjuTms8BETSRai5vhXetK26Ms8hrayiy38n7wwEKE8fZ9iFzLtwa6xbhD5KudWbKJFFOZAfpzWttGMwWlISbGQigcW4+Bg=="""
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key = readPrivatekey('d:/dev/mecp/conf/RSA.private.key','ymq123')
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t = decrypt(cipher,key)
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print('t=',t)
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