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M2Crypto wrapper for OpenSSL ECDH/ECDSA API.
@requires: OpenSSL 0.9.8 or newer
Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved.
Portions copyright (c) 2005-2006 Vrije Universiteit Amsterdam.
All rights reserved.Nt ECErrorc B s t Z RS( N( t __name__t
__module__( ( ( t1 /usr/lib64/python2.4/site-packages/M2Crypto/EC.pyR
s t ECc B s³ t Z d Z e i Z d d Z d Z d Z d Z d Z
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Object interface to a EC key pair.
i c C s0 t i | p
t d | | _ | | _ d S( Ns 'ec' type error( t m2t ec_key_type_checkt ect AssertionErrort selft _pyfree( R R R
( ( R t __init__: s c C s+ t | d d o | i | i n d S( NR
i ( t getattrR t m2_ec_key_freeR ( R ( ( R t __del__? s c C s- t i | i p
t d t i | i S( Ns 'ec' type error( R R R R R t
ec_key_keylen( R ( ( R t __len__C s c C s1 t i | i p
t d t i | i d S( s¬
Generates the key pair from its parameters. Use
keypair = EC.gen_params(curve)
keypair.gen_key()
to create an EC key pair.
s 'ec' type errorN( R R R R R t ec_key_gen_key( R ( ( R t gen_keyG s c C s t | i d S( Ni ( t EC_pubR R ( R ( ( R t pubQ s c C s* | i p
t d t i | i | S( sw
Sign the given digest using ECDSA. Returns a tuple (r,s), the two
ECDSA signature parameters.
s key is not initialisedN( R t check_keyR R t
ecdsa_signR t digest( R R ( ( R t sign_dsaU s c C s0 | i p
t d t i | i | | | S( sj
Verify the given digest using ECDSA. r and s are the ECDSA
signature parameters.
s key is not initialisedN( R R R R t ecdsa_verifyR R t rt s( R R R R ( ( R t
verify_dsa] s c C s* | i p
t d t i | i | S( Ns key is not initialised( R R R R t ecdsa_sign_asn1R R ( R R ( ( R t
sign_dsa_asn1e s c C s- | i p
t d t i | i | | S( Ns key is not initialised( R R R R t ecdsa_verify_asn1R R t blob( R R R ( ( R t verify_dsa_asn1i s c C s- | i p
t d t i | i | i S( sω
Compute the ECDH shared key of this key pair and the given public
key object. They must both use the same curve. Returns the
shared key in binary as a buffer object. No Key Derivation Function is
applied.
s key is not initialisedN( R R R R t ecdh_compute_keyR t pub_key( R R# ( ( R t compute_dh_keym s t aes_128_cbcc C s | d j o t i | i | i | SnV t t | d } | d j o t d | n t i | i | i | | Sd S( sR
Save the key pair to an M2Crypto.BIO.BIO object in PEM format.
@type bio: M2Crypto.BIO.BIO
@param bio: M2Crypto.BIO.BIO object to save key to.
@type cipher: string
@param cipher: Symmetric cipher to protect the key. The default
cipher is 'aes_128_cbc'. If cipher is None, then the key is saved
in the clear.
@type callback: Python callable
@param callback: A Python callable object that is invoked
to acquire a passphrase with which to protect the key.
The default is util.passphrase_callback.
s not such cipher %sN(
t ciphert NoneR t ec_key_write_bio_no_cipherR R t biot _ptrt callbackR t cipht
ValueErrort ec_key_write_bio( R R) R& R+ R, ( ( R t save_key_biow s
c C s% t i | d } | i | | | S( s+
Save the key pair to a file in PEM format.
@type file: string
@param file: Name of file to save key to.
@type cipher: string
@param cipher: Symmetric cipher to protect the key. The default
cipher is 'aes_128_cbc'. If cipher is None, then the key is saved
in the clear.
@type callback: Python callable
@param callback: A Python callable object that is invoked
to acquire a passphrase with which to protect the key.
The default is util.passphrase_callback.
t wbN( t BIOt openfilet fileR) R R/ R& R+ ( R R3 R& R+ R) ( ( R t save_key s c C s t i | i | i S( s³
Save the public key to an M2Crypto.BIO.BIO object in PEM format.
@type bio: M2Crypto.BIO.BIO
@param bio: M2Crypto.BIO.BIO object to save key to.
N( R t ec_key_write_pubkeyR R R) R* ( R R) ( ( R t save_pub_key_bio€ s c C s+ t i | d } t i | i | i S( s
Save the public key to a file in PEM format.
@type file: string
@param file: Name of file to save key to.
R0 N( R1 R2 R3 R) R R5 R R R* ( R R3 R) ( ( R t save_pub_key s c C s- t i | i p
t d t i | i S( Ns 'ec' type error( R R R R R t ec_key_check_key( R ( ( R R · s ( R R t __doc__R t ec_key_freeR
R R R R R R R R R! R$ t utilt passphrase_callbackR/ R4 R6 R7 R ( ( ( R R 2 s"
R c B s5 t Z d Z d d Z d Z e i Z e i Z RS( sc
Object interface to an EC public key.
((don't like this implementation inheritance))
i c C s t i | | | d | _ d S( N( R R R R R
R' t der( R R R
( ( R R Β s c C sG | i p
t d | i d j o t i | i | _ n | i S( sJ
Returns the public key in DER format as a buffer object.
s key is not initialisedN( R R R R= R' R t ec_key_get_public_derR ( R ( ( R t get_derΖ s
(
R R R9 R R? R R7 R4 R6 R/ ( ( ( R R Ό s
c C s t t i | d S( s«
Factory function that generates EC parameters and
instantiates a EC object from the output.
@param curve: This is the OpenSSL nid of the curve to use.
i N( R R t ec_key_new_by_curve_namet curve( RA ( ( R t
gen_paramsΤ s c C s t i | } t | | S( s
Factory function that instantiates a EC object.
@param file: Names the file that contains the PEM representation
of the EC key pair.
@param callback: Python callback object that will be invoked
if the EC key pair is passphrase-protected.
N( R1 R2 R3 R) t load_key_bioR+ ( R3 R+ R) ( ( R t load_keyή s c C s t t i | i | d S( s
Factory function that instantiates a EC object.
@param bio: M2Crypto.BIO object that contains the PEM
representation of the EC key pair.
@param callback: Python callback object that will be invoked
if the EC key pair is passphrase-protected.
i N( R R t ec_key_read_bioR) R* R+ ( R) R+ ( ( R RC μ s c C s t i | } t | S( sΠ
Load an EC public key from file.
@type file: string
@param file: Name of file containing EC public key in PEM format.
@rtype: M2Crypto.EC.EC_pub
@return: M2Crypto.EC.EC_pub object.
N( R1 R2 R3 R) t load_pub_key_bio( R3 R) ( ( R t load_pub_keyψ s c C s: t i | i } | d j o t n t | d S( sύ
Load an EC public key from an M2Crypto.BIO.BIO object.
@type bio: M2Crypto.BIO.BIO
@param bio: M2Crypto.BIO.BIO object containing EC public key in PEM
format.
@rtype: M2Crypto.EC.EC_pub
@return: M2Crypto.EC.EC_pub object.
i N( R t ec_key_read_pubkeyR) R* R R' t ec_errorR ( R) R ( ( R RF s
c C s t t i t i d S( N( R R t err_reason_error_stringt
err_get_error( ( ( R RI s c C s t t i | d S( s!
Create EC_pub from DER.
i N( R R t ec_key_from_pubkey_derR= ( R= ( ( R t pub_key_from_der s (0 R9 R; R1 R t ExceptionR t ec_initt
NID_secp112r1t
NID_secp112r2t
NID_secp128r1t
NID_secp128r2t
NID_secp160k1t
NID_secp160r1t
NID_secp160r2t
NID_secp192k1t
NID_secp224k1t
NID_secp224r1t
NID_secp256k1t
NID_secp384r1t
NID_secp521r1t
NID_sect113r1t
NID_sect113r2t
NID_sect131r1t
NID_sect131r2t
NID_sect163k1t
NID_sect163r1t
NID_sect163r2t
NID_sect193r1t
NID_sect193r2t
NID_sect233k1t
NID_sect233r1t
NID_sect239k1t
NID_sect283k1t
NID_sect283r1t
NID_sect409k1t
NID_sect409r1t
NID_sect571k1t
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