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[katamari commit: fc133f4e22e0d82053b5978b099a04f1ae5f62d5]
This commit is contained in:
Andrew Harding 2014-03-11 15:46:56 -06:00
parent 420209b5b2
commit 1d9843178d
1 changed files with 75 additions and 0 deletions
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75
pem.go
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@ -3,10 +3,29 @@
package openssl
// #include <openssl/evp.h>
// #include <openssl/ssl.h>
// #include <openssl/conf.h>
//
// void OPENSSL_free_not_a_macro(void *ref) { OPENSSL_free(ref); }
//
// int EVP_SignInit_not_a_macro(EVP_MD_CTX *ctx, const EVP_MD *type) {
// return EVP_SignInit(ctx, type);
// }
//
// int EVP_SignUpdate_not_a_macro(EVP_MD_CTX *ctx, const void *d,
// unsigned int cnt) {
// return EVP_SignUpdate(ctx, d, cnt);
// }
//
// int EVP_VerifyInit_not_a_macro(EVP_MD_CTX *ctx, const EVP_MD *type) {
// return EVP_VerifyInit(ctx, type);
// }
//
// int EVP_VerifyUpdate_not_a_macro(EVP_MD_CTX *ctx, const void *d,
// unsigned int cnt) {
// return EVP_VerifyUpdate(ctx, d, cnt);
// }
import "C"
import (
@ -16,7 +35,16 @@ import (
"unsafe"
)
type Method *C.EVP_MD
var (
SHA256 Method = C.EVP_sha256()
)
type PublicKey interface {
// Verifies the data signature using PKCS1.15
VerifyPKCS1v15(method Method, data, sig []byte) error
// MarshalPKIXPublicKeyPEM converts the public key to PEM-encoded PKIX
// format
MarshalPKIXPublicKeyPEM() (pem_block []byte, err error)
@ -31,6 +59,9 @@ type PublicKey interface {
type PrivateKey interface {
PublicKey
// Signs the data using PKCS1.15
SignPKCS1v15(Method, []byte) ([]byte, error)
// MarshalPKCS1PrivateKeyPEM converts the private key to PEM-encoded PKCS1
// format
MarshalPKCS1PrivateKeyPEM() (pem_block []byte, err error)
@ -46,6 +77,50 @@ type pKey struct {
func (key *pKey) evpPKey() *C.EVP_PKEY { return key.key }
func (key *pKey) SignPKCS1v15(method Method, data []byte) ([]byte, error) {
var ctx C.EVP_MD_CTX
C.EVP_MD_CTX_init(&ctx)
defer C.EVP_MD_CTX_cleanup(&ctx)
if 1 != C.EVP_SignInit_not_a_macro(&ctx, method) {
return nil, errors.New("signpkcs1v15: failed to init signature")
}
if len(data) > 0 {
if 1 != C.EVP_SignUpdate_not_a_macro(
&ctx, unsafe.Pointer(&data[0]), C.uint(len(data))) {
return nil, errors.New("signpkcs1v15: failed to update signature")
}
}
sig := make([]byte, C.EVP_PKEY_size(key.key))
var sigblen C.uint
if 1 != C.EVP_SignFinal(&ctx,
((*C.uchar)(unsafe.Pointer(&sig[0]))), &sigblen, key.key) {
return nil, errors.New("signpkcs1v15: failed to finalize signature")
}
return sig[:sigblen], nil
}
func (key *pKey) VerifyPKCS1v15(method Method, data, sig []byte) error {
var ctx C.EVP_MD_CTX
C.EVP_MD_CTX_init(&ctx)
defer C.EVP_MD_CTX_cleanup(&ctx)
if 1 != C.EVP_VerifyInit_not_a_macro(&ctx, method) {
return errors.New("verifypkcs1v15: failed to init verify")
}
if len(data) > 0 {
if 1 != C.EVP_VerifyUpdate_not_a_macro(
&ctx, unsafe.Pointer(&data[0]), C.uint(len(data))) {
return errors.New("verifypkcs1v15: failed to update verify")
}
}
if 1 != C.EVP_VerifyFinal(&ctx,
((*C.uchar)(unsafe.Pointer(&sig[0]))), C.uint(len(sig)), key.key) {
return errors.New("verifypkcs1v15: failed to finalize verify")
}
return nil
}
func (key *pKey) MarshalPKCS1PrivateKeyPEM() (pem_block []byte,
err error) {
bio := C.BIO_new(C.BIO_s_mem())