Commit 2621c847 authored by Matt Caswell's avatar Matt Caswell
Browse files

Add support for setting raw private Poly1305 keys 



Reviewed-by: default avatarRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5520)
parent 5539c5d6

crypto/poly1305/poly1305_ameth.c

+35 −1
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ 
#include "internal/asn1_int.h"

#include "internal/poly1305.h"

#include "poly1305_local.h"

#include "internal/evp_int.h"



/*

 * POLY1305 "ASN1" method. This is just here to indicate the maximum
@@ -45,6 +46,27 @@ static int poly1305_pkey_public_cmp(const EVP_PKEY *a, const EVP_PKEY *b) 
    return ASN1_OCTET_STRING_cmp(EVP_PKEY_get0(a), EVP_PKEY_get0(b));

}



static int poly1305_set_priv_key(EVP_PKEY *pkey, const unsigned char *priv,

                                 size_t len)

{

    ASN1_OCTET_STRING *os;



    if (pkey->pkey.ptr != NULL || len != POLY1305_KEY_SIZE)

        return 0;



    os = ASN1_OCTET_STRING_new();

    if (os == NULL)

        return 0;



    if (!ASN1_OCTET_STRING_set(os, priv, len)) {

        ASN1_OCTET_STRING_free(os);

        return 0;

    }



    pkey->pkey.ptr = os;

    return 1;

}



const EVP_PKEY_ASN1_METHOD poly1305_asn1_meth = {

    EVP_PKEY_POLY1305,

    EVP_PKEY_POLY1305,
@@ -63,5 +85,17 @@ const EVP_PKEY_ASN1_METHOD poly1305_asn1_meth = { 


    poly1305_key_free,

    poly1305_pkey_ctrl,

    0, 0

    NULL,

    NULL,



    NULL,

    NULL,

    NULL,



    NULL,

    NULL,

    NULL,



    poly1305_set_priv_key,

    NULL,

};