def parse_public_key(data):
"""Parse an RSA public key.
@param data: DER-encoded X.509 subjectPublicKeyInfo
containing an RFC3447 RSAPublicKey.
@return: RSA public key
"""
try:
# Not sure why the [1:] is necessary to skip a byte.
x = asn1_parse(ASN1_Object, data)
pkd = asn1_parse(ASN1_RSAPublicKey, x[0][1][1:])
except ASN1FormatError as e:
raise UnparsableKeyError('Unparsable public key: ' + str(e))
pk = {
'modulus': pkd[0][0],
'publicExponent': pkd[0][1],
}
return pk
def parse_public_key(data):
"""Parse an RSA public key.
@param data: DER-encoded X.509 subjectPublicKeyInfo
containing an RFC8017 RSAPublicKey.
@return: RSA public key
"""
try:
# Not sure why the [1:] is necessary to skip a byte.
x = asn1_parse(ASN1_Object, data)
pkd = asn1_parse(ASN1_RSAPublicKey, x[0][1][1:])
except ASN1FormatError as e:
raise UnparsableKeyError('Unparsable public key: ' + str(e))
pk = {
'modulus': pkd[0][0],
'publicExponent': pkd[0][1],
}
return pk
def parse_private_key(data):
"""Parse an RSA private key.
@param data: DER-encoded RFC3447 RSAPrivateKey.
@return: RSA private key
"""
try:
pka = asn1_parse(ASN1_RSAPrivateKey, data)
except ASN1FormatError as e:
raise UnparsableKeyError('Unparsable private key: ' + str(e))
pk = {
'version': pka[0][0],
'modulus': pka[0][1],
'publicExponent': pka[0][2],
'privateExponent': pka[0][3],
'prime1': pka[0][4],
'prime2': pka[0][5],
'exponent1': pka[0][6],
'exponent2': pka[0][7],
'coefficient': pka[0][8],
}
return pk
def parse_private_key(data):
"""Parse an RSA private key.
@param data: DER-encoded RFC8017 RSAPrivateKey.
@return: RSA private key
"""
try:
pka = asn1_parse(ASN1_RSAPrivateKey, data)
except ASN1FormatError as e:
raise UnparsableKeyError('Unparsable private key: ' + str(e))
pk = {
'version': pka[0][0],
'modulus': pka[0][1],
'publicExponent': pka[0][2],
'privateExponent': pka[0][3],
'prime1': pka[0][4],
'prime2': pka[0][5],
'exponent1': pka[0][6],
'exponent2': pka[0][7],
'coefficient': pka[0][8],
}
return pk
