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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/skein512/skein512.odin
Vendored
+80 -14
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@@ -22,16 +22,19 @@ import botan "../bindings"
High level API
*/
DIGEST_SIZE_256 :: 32
DIGEST_SIZE_512 :: 64
// hash_string_256 will hash the given input and return the
// computed hash
hash_string_256 :: proc(data: string) -> [32]byte {
hash_string_256 :: proc(data: string) -> [DIGEST_SIZE_256]byte {
return hash_bytes_256(transmute([]byte)(data))
}
// hash_bytes_256 will hash the given input and return the
// computed hash
hash_bytes_256 :: proc(data: []byte) -> [32]byte {
hash: [32]byte
hash_bytes_256 :: proc(data: []byte) -> [DIGEST_SIZE_256]byte {
hash: [DIGEST_SIZE_256]byte
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_SKEIN_512_256, 0)
botan.hash_update(ctx, len(data) == 0 ? nil : &data[0], uint(len(data)))
@@ -40,10 +43,29 @@ hash_bytes_256 :: proc(data: []byte) -> [32]byte {
return hash
}
// hash_string_to_buffer_256 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_256 :: proc(data: string, hash: []byte) {
hash_bytes_to_buffer_256(transmute([]byte)(data), hash);
}
// hash_bytes_to_buffer_256 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_256 :: proc(data, hash: []byte) {
assert(len(hash) >= DIGEST_SIZE_256, "Size of destination buffer is smaller than the digest size")
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_SKEIN_512_256, 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_256 will read the stream in chunks and compute a
// hash from its contents
hash_stream_256 :: proc(s: io.Stream) -> ([32]byte, bool) {
hash: [32]byte
hash_stream_256 :: proc(s: io.Stream) -> ([DIGEST_SIZE_256]byte, bool) {
hash: [DIGEST_SIZE_256]byte
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_SKEIN_512_256, 0)
buf := make([]byte, 512)
@@ -62,7 +84,7 @@ hash_stream_256 :: proc(s: io.Stream) -> ([32]byte, bool) {
// hash_file_256 will read the file provided by the given handle
// and compute a hash
hash_file_256 :: proc(hd: os.Handle, load_at_once := false) -> ([32]byte, bool) {
hash_file_256 :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE_256]byte, bool) {
if !load_at_once {
return hash_stream_256(os.stream_from_handle(hd))
} else {
@@ -70,7 +92,7 @@ hash_file_256 :: proc(hd: os.Handle, load_at_once := false) -> ([32]byte, bool)
return hash_bytes_256(buf[:]), ok
}
}
return [32]byte{}, false
return [DIGEST_SIZE_256]byte{}, false
}
hash_256 :: proc {
@@ -78,18 +100,20 @@ hash_256 :: proc {
hash_file_256,
hash_bytes_256,
hash_string_256,
hash_bytes_to_buffer_256,
hash_string_to_buffer_256,
}
// hash_string_512 will hash the given input and return the
// computed hash
hash_string_512 :: proc(data: string) -> [64]byte {
hash_string_512 :: proc(data: string) -> [DIGEST_SIZE_512]byte {
return hash_bytes_512(transmute([]byte)(data))
}
// hash_bytes_512 will hash the given input and return the
// computed hash
hash_bytes_512 :: proc(data: []byte) -> [64]byte {
hash: [64]byte
hash_bytes_512 :: proc(data: []byte) -> [DIGEST_SIZE_512]byte {
hash: [DIGEST_SIZE_512]byte
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_SKEIN_512_512, 0)
botan.hash_update(ctx, len(data) == 0 ? nil : &data[0], uint(len(data)))
@@ -98,10 +122,29 @@ hash_bytes_512 :: proc(data: []byte) -> [64]byte {
return hash
}
// hash_string_to_buffer_512 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_512 :: proc(data: string, hash: []byte) {
hash_bytes_to_buffer_512(transmute([]byte)(data), hash);
}
// hash_bytes_to_buffer_512 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_512 :: proc(data, hash: []byte) {
assert(len(hash) >= DIGEST_SIZE_512, "Size of destination buffer is smaller than the digest size")
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_SKEIN_512_512, 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_512 will read the stream in chunks and compute a
// hash from its contents
hash_stream_512 :: proc(s: io.Stream) -> ([64]byte, bool) {
hash: [64]byte
hash_stream_512 :: proc(s: io.Stream) -> ([DIGEST_SIZE_512]byte, bool) {
hash: [DIGEST_SIZE_512]byte
ctx: botan.hash_t
botan.hash_init(&ctx, botan.HASH_SKEIN_512_512, 0)
buf := make([]byte, 512)
@@ -120,7 +163,7 @@ hash_stream_512 :: proc(s: io.Stream) -> ([64]byte, bool) {
// hash_file_512 will read the file provided by the given handle
// and compute a hash
hash_file_512 :: proc(hd: os.Handle, load_at_once := false) -> ([64]byte, bool) {
hash_file_512 :: proc(hd: os.Handle, load_at_once := false) -> ([DIGEST_SIZE_512]byte, bool) {
if !load_at_once {
return hash_stream_512(os.stream_from_handle(hd))
} else {
@@ -128,7 +171,7 @@ hash_file_512 :: proc(hd: os.Handle, load_at_once := false) -> ([64]byte, bool)
return hash_bytes_512(buf[:]), ok
}
}
return [64]byte{}, false
return [DIGEST_SIZE_512]byte{}, false
}
hash_512 :: proc {
@@ -136,6 +179,8 @@ hash_512 :: proc {
hash_file_512,
hash_bytes_512,
hash_string_512,
hash_bytes_to_buffer_512,
hash_string_to_buffer_512,
}
// hash_string_slice will hash the given input and return the
@@ -156,6 +201,25 @@ hash_bytes_slice :: proc(data: []byte, bit_size: int, allocator := context.alloc
return hash
}
// hash_string_to_buffer_512 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_slice :: proc(data: string, hash: []byte, bit_size: int, allocator := context.allocator) {
hash_bytes_to_buffer_slice(transmute([]byte)(data), hash, bit_size, allocator);
}
// hash_bytes_to_buffer_slice 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_slice :: proc(data, hash: []byte, bit_size: int, allocator := context.allocator) {
assert(len(hash) >= bit_size, "Size of destination buffer is smaller than the digest size")
ctx: botan.hash_t
botan.hash_init(&ctx, strings.unsafe_string_to_cstring(fmt.tprintf("Skein-512(%d)", bit_size * 8)), 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_slice will read the stream in chunks and compute a
// hash from its contents
hash_stream_slice :: proc(s: io.Stream, bit_size: int, allocator := context.allocator) -> ([]byte, bool) {
@@ -194,6 +258,8 @@ hash_slice :: proc {
hash_file_slice,
hash_bytes_slice,
hash_string_slice,
hash_bytes_to_buffer_slice,
hash_string_to_buffer_slice,
}
/*