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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.i����NtECErrorcBseZRS((t__name__t
__module__(((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyR
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    Object interface to a EC key pair.
    icCs||_||_dS(N(tect_pyfree(tselfRR((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt__init__is	cCs)t|dd�r%|j|j�ndS(NRi(tgetattrtm2_ec_key_freeR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt__del__nscCstj|j�S(N(tm2t
ec_key_keylenR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt__len__rscCstj|j�dS(s�
        Generates the key pair from its parameters. Use::
            keypair = EC.gen_params(curve)
            keypair.gen_key()
        to create an EC key pair.
        N(Rtec_key_gen_keyR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytgen_keyvscCst|jd�S(Ni(tEC_pubR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytpub�scCstj|j|�S(sw
        Sign the given digest using ECDSA. Returns a tuple (r,s), the two
        ECDSA signature parameters.
        (Rt
ecdsa_signR(Rtdigest((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytsign_dsa�scCstj|j|||�S(sj
        Verify the given digest using ECDSA. r and s are the ECDSA
        signature parameters.
        (Rtecdsa_verifyR(RRtrts((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt
verify_dsa�scCstj|j|�S(N(Rtecdsa_sign_asn1R(RR((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt
sign_dsa_asn1�scCstj|j||�S(N(Rtecdsa_verify_asn1R(RRtblob((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytverify_dsa_asn1�scCstj|j|j�S(s�
        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.
        (Rtecdh_compute_keyR(Rtpub_key((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytcompute_dh_key�staes_128_cbccCs|dkr(tj|j|j�|�Stt|d�}|dkrYtd|��ntj|j|j�|�|�SdS(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.
        snot such cipher %sN(tNoneRtec_key_write_bio_no_cipherRt_ptrRt
ValueErrortec_key_write_bio(Rtbiotciphertcallbacktciph((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytsave_key_bio�scCs%tj|d�}|j|||�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.
        twb(tBIOtopenfileR+(RtfileR(R)R'((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytsave_key�scCstj|j|j��S(s�
        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.
        (Rtec_key_write_pubkeyRR$(RR'((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytsave_pub_key_bio�scCs+tj|d�}tj|j|j��S(s�
        Save the public key to a file in PEM format.

        @type file: string
        @param file: Name of file to save key to.
        R,(R-R.RR1RR$(RR/R'((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytsave_pub_key�scCstj|j�S(N(Rtec_key_type_checkR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt_check_key_type�scCstj|j�S(N(Rtec_key_check_keyR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt	check_key�s(RRt__doc__Rtec_key_freeR	RR
R
RRRRRRR tutiltpassphrase_callbackR+R0R2R3R5R7(((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyRas$				
						
			
	RcBs5eZdZdd�Zd�ZejZejZ	RS(sc
    Object interface to an EC public key. 
    ((don't like this implementation inheritance))
    icCs tj|||�d|_dS(N(RRR"tder(RRR((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyR�scCs.|jdkr'tj|j�|_n|jS(sJ
        Returns the public key in DER format as a buffer object.
        N(R<R"Rtec_key_get_public_derR(R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytget_der�s(
RRR8RR>RR3R0R2R+(((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyR�s
			cCsttj|�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(RRtec_key_new_by_curve_name(tcurve((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyt
gen_paramsscCstj|�}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.
    (R-R.tload_key_bio(R/R)R'((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytload_keys
cCsttj|j�|�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(RRtec_key_read_bioR$(R'R)((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyRBs
cCstj|�}t|�S(s�
    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.
    (R-R.tload_pub_key_bio(R/R'((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytload_pub_key*s
cCs8tj|j��}|dkr+t�nt|d�S(s�
    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.
    iN(Rtec_key_read_pubkeyR$R"tec_errorR(R'R((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyRE8s
cCsttjtj���dS(N(RRterr_reason_error_stringt
err_get_error(((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pyRHHscCsttj|�d�S(s!
    Create EC_pub from DER.
    i(RRtec_key_from_pubkey_der(R<((s1/usr/lib64/python2.7/site-packages/M2Crypto/EC.pytpub_key_from_derKs((RR8R:R-Rt	ExceptionRtec_initt
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