def decimal_to_bytes(encoded):
"""
Converts a decimal encoded string to its byte representation.
:param encoded:
Decimal encoded string.
:returns:
Byte string.
"""
return long_to_bytes(long(encoded))
def long_to_base64(num):
"""
Base-64 encodes a long.
:param num:
A long integer.
:returns:
Base-64 encoded byte string.
"""
byte_string = long_to_bytes(num)
return base64_encode(byte_string)
def sign(self, digest):
"""
Signs a digest with the key.
:param digest:
The SHA-1 digest of the data.
:param encoder:
The encoding method to use. Default EMSA-PKCS1-v1.5
:returns:
Signature byte string.
"""
return long_to_bytes(self._sign(digest))
def pkcs1_v1_5_encode(key_size, data):
"""
Encodes a key using PKCS1's emsa-pkcs1-v1_5 encoding.
Adapted from paramiko.
:author:
Rick Copeland <*****@*****.**>
:param key_size:
RSA key size.
:param data:
Data
:returns:
A blob of data as large as the key's N, using PKCS1's
"emsa-pkcs1-v1_5" encoding.
"""
SHA1_DIGESTINFO = '\x30\x21\x30\x09\x06\x05\x2b\x0e\x03\x02\x1a\x05\x00\x04\x14'
size = len(long_to_bytes(key_size))
filler = '\xff' * (size - len(SHA1_DIGESTINFO) - len(data) - 3)
return '\x00\x01' + filler + '\x00' + SHA1_DIGESTINFO + data
