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Extended crypto API by variants that write the result into a destination buffer, instead of returning it

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This commit is contained in:
zhibog
2021-12-31 13:16:11 +01:00
parent c7ff296bef
commit 42033ea808
38 changed files with 2690 additions and 662 deletions
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vendor/botan/md4/md4.odin
Vendored
+30 -7
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@@ -20,16 +20,18 @@ import botan "../bindings"
High level API
*/
DIGEST_SIZE :: 16
// hash_string will hash the given input and return the
// computed hash
hash_string :: proc "contextless" (data: string) -> [16]byte {
hash_string :: proc "contextless" (data: string) -> [DIGEST_SIZE]byte {
return hash_bytes(transmute([]byte)(data))
}
// hash_bytes will hash the given input and return the
// computed hash
hash_bytes :: proc "contextless" (data: []byte) -> [16]byte {
hash: [16]byte
hash_bytes :: proc "contextless" (data: []byte) -> [DIGEST_SIZE]byte {
hash: [DIGEST_SIZE]byte
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_MD4, 0)
botan.hash_update(ctx, len(data) == 0 ? nil : &data[0], uint(len(data)))
@@ -38,10 +40,29 @@ hash_bytes :: proc "contextless" (data: []byte) -> [16]byte {
return hash
}
// hash_string_to_buffer will hash the given input and assign the
// computed hash to the second parameter.
// It requires that the destination buffer is at least as big as the digest size
hash_string_to_buffer :: proc(data: string, hash: []byte) {
hash_bytes_to_buffer(transmute([]byte)(data), hash);
}
// hash_bytes_to_buffer will hash the given input and write the
// computed hash into the second parameter.
// It requires that the destination buffer is at least as big as the digest size
hash_bytes_to_buffer :: proc(data, hash: []byte) {
assert(len(hash) >= DIGEST_SIZE, "Size of destination buffer is smaller than the digest size")
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_MD4, 0)
botan.hash_update(ctx, len(data) == 0 ? nil : &data[0], uint(len(data)))
botan.hash_final(ctx, &hash[0])
botan.hash_destroy(ctx)
}
// hash_stream will read the stream in chunks and compute a
// hash from its contents
hash_stream :: proc(s: io.Stream) -> ([16]byte, bool) {
hash: [16]byte
hash_stream :: proc(s: io.Stream) -> ([DIGEST_SIZE]byte, bool) {
hash: [DIGEST_SIZE]byte
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_MD4, 0)
buf := make([]byte, 512)
@@ -60,7 +81,7 @@ hash_stream :: proc(s: io.Stream) -> ([16]byte, bool) {
// hash_file will read the file provided by the given handle
// and compute a hash
hash_file :: proc(hd: os.Handle, load_at_once := false) -> ([16]byte, bool) {
hash_file :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE]byte, bool) {
if !load_at_once {
return hash_stream(os.stream_from_handle(hd))
} else {
@@ -68,7 +89,7 @@ hash_file :: proc(hd: os.Handle, load_at_once := false) -> ([16]byte, bool) {
return hash_bytes(buf[:]), ok
}
}
return [16]byte{}, false
return [DIGEST_SIZE]byte{}, false
}
hash :: proc {
@@ -76,6 +97,8 @@ hash :: proc {
hash_file,
hash_bytes,
hash_string,
hash_bytes_to_buffer,
hash_string_to_buffer,
}
/*