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This commit is contained in:
Kovid Goyal 2016-03-21 21:52:45 +05:30
parent 12986b9ce3
commit 19c1d25c24
1 changed files with 7 additions and 3 deletions
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10
src/pyj/aes.pyj
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@ -253,6 +253,11 @@ class CBC:
return {'iv':first_iv, 'cipherbytes':outputbytes} return {'iv':first_iv, 'cipherbytes':outputbytes}
def encrypt(self, plaintext, tag): def encrypt(self, plaintext, tag):
# Encrypt the plaintext (a string) returning an object that contains
# the used initialization vector and the encrypted bytes (as
# Uint8Arrays). If the optional tag (a string) is present, it is also
# encrypted along with plaintext.It can be used to ensure message integrity.
# See the __main__ block at the bottom of this file for example usage.
return self.encrypt_bytes(string_to_bytes(plaintext), string_to_bytes(tag) if tag else Uint8Array(0)) return self.encrypt_bytes(string_to_bytes(plaintext), string_to_bytes(tag) if tag else Uint8Array(0))
def decrypt(self, output_from_encrypt, tag): def decrypt(self, output_from_encrypt, tag):
@ -281,7 +286,6 @@ if __name__ == '__main__':
crypted = cbc.encrypt(text) crypted = cbc.encrypt(text)
decrypted = cbc.decrypt(crypted) decrypted = cbc.decrypt(crypted)
print('Roundtrip:', 'OK' if text is decrypted else 'FAILED') print('Roundtrip:', 'OK' if text is decrypted else 'FAILED')
crypted = cbc.encrypt(text, 'secret') crypted = cbc.encrypt(text, 'secret-tag')
decrypted = cbc.decrypt(crypted, 'secret') decrypted = cbc.decrypt(crypted, 'secret-tag')
print('Roundtrip with tag:', 'OK' if text is decrypted else 'FAILED') print('Roundtrip with tag:', 'OK' if text is decrypted else 'FAILED')