52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
|
// Copyright (C) 2017. See AUTHORS.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
package openssl
|
||
|
|
|
||
|
|
// #include "shim.h"
|
||
|
|
import "C"
|
||
|
|
|
||
|
|
import (
|
||
|
|
"fmt"
|
||
|
|
"unsafe"
|
||
|
|
)
|
||
|
|
|
||
|
|
// Digest represents and openssl message digest.
|
||
|
|
type Digest struct {
|
||
|
|
ptr *C.EVP_MD
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetDigestByName returns the Digest with the name or nil and an error if the
|
||
|
|
// digest was not found.
|
||
|
|
func GetDigestByName(name string) (*Digest, error) {
|
||
|
|
cname := C.CString(name)
|
||
|
|
defer C.free(unsafe.Pointer(cname))
|
||
|
|
p := C.X_EVP_get_digestbyname(cname)
|
||
|
|
if p == nil {
|
||
|
|
return nil, fmt.Errorf("Digest %v not found", name)
|
||
|
|
}
|
||
|
|
// we can consider digests to use static mem; don't need to free
|
||
|
|
return &Digest{ptr: p}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// GetDigestByName returns the Digest with the NID or nil and an error if the
|
||
|
|
// digest was not found.
|
||
|
|
func GetDigestByNid(nid NID) (*Digest, error) {
|
||
|
|
sn, err := Nid2ShortName(nid)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
return GetDigestByName(sn)
|
||
|
|
}
|