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authorYawning Angel <yawning@schwanenlied.me>2023-11-16 11:26:24 +0900
committerYawning Angel <yawning@schwanenlied.me>2023-11-17 16:53:29 +0900
commitb4e3da84c5b0d2032efeda7da4d8d1a5cd58f283 (patch)
treef6f2009e6205c271680a71010d4790d6f50b5042
parent9d627e453adb2d26bc133fdff6e180851ad8ab9c (diff)
core/crypto/sha1: odinfmt (NFC)
-rw-r--r--core/crypto/sha1/sha1.odin154
1 files changed, 77 insertions, 77 deletions
diff --git a/core/crypto/sha1/sha1.odin b/core/crypto/sha1/sha1.odin
index 599d1791e..d868fca80 100644
--- a/core/crypto/sha1/sha1.odin
+++ b/core/crypto/sha1/sha1.odin
@@ -10,9 +10,9 @@ package sha1
Implementation of the SHA1 hashing algorithm, as defined in RFC 3174 <https://datatracker.ietf.org/doc/html/rfc3174>
*/
+import "core:io"
import "core:mem"
import "core:os"
-import "core:io"
import "../util"
@@ -25,77 +25,77 @@ DIGEST_SIZE :: 20
// hash_string will hash the given input and return the
// computed hash
hash_string :: proc(data: string) -> [DIGEST_SIZE]byte {
- return hash_bytes(transmute([]byte)(data))
+ return hash_bytes(transmute([]byte)(data))
}
// hash_bytes will hash the given input and return the
// computed hash
hash_bytes :: proc(data: []byte) -> [DIGEST_SIZE]byte {
- hash: [DIGEST_SIZE]byte
- ctx: Sha1_Context
- init(&ctx)
- update(&ctx, data)
- final(&ctx, hash[:])
- return hash
+ hash: [DIGEST_SIZE]byte
+ ctx: Sha1_Context
+ init(&ctx)
+ update(&ctx, data)
+ final(&ctx, hash[:])
+ 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(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: Sha1_Context
- init(&ctx)
- update(&ctx, data)
- final(&ctx, hash)
+ assert(len(hash) >= DIGEST_SIZE, "Size of destination buffer is smaller than the digest size")
+ ctx: Sha1_Context
+ init(&ctx)
+ update(&ctx, data)
+ final(&ctx, hash)
}
// hash_stream will read the stream in chunks and compute a
// hash from its contents
hash_stream :: proc(s: io.Stream) -> ([DIGEST_SIZE]byte, bool) {
- hash: [DIGEST_SIZE]byte
- ctx: Sha1_Context
- init(&ctx)
- buf := make([]byte, 512)
- defer delete(buf)
- read := 1
- for read > 0 {
- read, _ = io.read(s, buf)
- if read > 0 {
- update(&ctx, buf[:read])
- }
- }
- final(&ctx, hash[:])
- return hash, true
+ hash: [DIGEST_SIZE]byte
+ ctx: Sha1_Context
+ init(&ctx)
+ buf := make([]byte, 512)
+ defer delete(buf)
+ read := 1
+ for read > 0 {
+ read, _ = io.read(s, buf)
+ if read > 0 {
+ update(&ctx, buf[:read])
+ }
+ }
+ final(&ctx, hash[:])
+ return hash, true
}
// 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) -> ([DIGEST_SIZE]byte, bool) {
- if !load_at_once {
- return hash_stream(os.stream_from_handle(hd))
- } else {
- if buf, ok := os.read_entire_file(hd); ok {
- return hash_bytes(buf[:]), ok
- }
- }
- return [DIGEST_SIZE]byte{}, false
+ if !load_at_once {
+ return hash_stream(os.stream_from_handle(hd))
+ } else {
+ if buf, ok := os.read_entire_file(hd); ok {
+ return hash_bytes(buf[:]), ok
+ }
+ }
+ return [DIGEST_SIZE]byte{}, false
}
hash :: proc {
- hash_stream,
- hash_file,
- hash_bytes,
- hash_string,
- hash_bytes_to_buffer,
- hash_string_to_buffer,
+ hash_stream,
+ hash_file,
+ hash_bytes,
+ hash_string,
+ hash_bytes_to_buffer,
+ hash_string_to_buffer,
}
/*
@@ -108,10 +108,10 @@ init :: proc(ctx: ^Sha1_Context) {
ctx.state[2] = 0x98badcfe
ctx.state[3] = 0x10325476
ctx.state[4] = 0xc3d2e1f0
- ctx.k[0] = 0x5a827999
- ctx.k[1] = 0x6ed9eba1
- ctx.k[2] = 0x8f1bbcdc
- ctx.k[3] = 0xca62c1d6
+ ctx.k[0] = 0x5a827999
+ ctx.k[1] = 0x6ed9eba1
+ ctx.k[2] = 0x8f1bbcdc
+ ctx.k[3] = 0xca62c1d6
}
update :: proc(ctx: ^Sha1_Context, data: []byte) {
@@ -131,24 +131,23 @@ final :: proc(ctx: ^Sha1_Context, hash: []byte) {
if ctx.datalen < 56 {
ctx.data[i] = 0x80
- i += 1
- for i < 56 {
- ctx.data[i] = 0x00
- i += 1
- }
- }
- else {
+ i += 1
+ for i < 56 {
+ ctx.data[i] = 0x00
+ i += 1
+ }
+ } else {
ctx.data[i] = 0x80
- i += 1
- for i < BLOCK_SIZE {
- ctx.data[i] = 0x00
- i += 1
- }
+ i += 1
+ for i < BLOCK_SIZE {
+ ctx.data[i] = 0x00
+ i += 1
+ }
transform(ctx, ctx.data[:])
mem.set(&ctx.data, 0, 56)
}
- ctx.bitlen += u64(ctx.datalen * 8)
+ ctx.bitlen += u64(ctx.datalen * 8)
ctx.data[63] = u8(ctx.bitlen)
ctx.data[62] = u8(ctx.bitlen >> 8)
ctx.data[61] = u8(ctx.bitlen >> 16)
@@ -160,9 +159,9 @@ final :: proc(ctx: ^Sha1_Context, hash: []byte) {
transform(ctx, ctx.data[:])
for j: u32 = 0; j < 4; j += 1 {
- hash[j] = u8(ctx.state[0] >> (24 - j * 8)) & 0x000000ff
- hash[j + 4] = u8(ctx.state[1] >> (24 - j * 8)) & 0x000000ff
- hash[j + 8] = u8(ctx.state[2] >> (24 - j * 8)) & 0x000000ff
+ hash[j] = u8(ctx.state[0] >> (24 - j * 8)) & 0x000000ff
+ hash[j + 4] = u8(ctx.state[1] >> (24 - j * 8)) & 0x000000ff
+ hash[j + 8] = u8(ctx.state[2] >> (24 - j * 8)) & 0x000000ff
hash[j + 12] = u8(ctx.state[3] >> (24 - j * 8)) & 0x000000ff
hash[j + 16] = u8(ctx.state[4] >> (24 - j * 8)) & 0x000000ff
}
@@ -172,28 +171,29 @@ final :: proc(ctx: ^Sha1_Context, hash: []byte) {
SHA1 implementation
*/
-BLOCK_SIZE :: 64
+BLOCK_SIZE :: 64
Sha1_Context :: struct {
- data: [BLOCK_SIZE]byte,
- datalen: u32,
- bitlen: u64,
- state: [5]u32,
- k: [4]u32,
+ data: [BLOCK_SIZE]byte,
+ datalen: u32,
+ bitlen: u64,
+ state: [5]u32,
+ k: [4]u32,
}
transform :: proc(ctx: ^Sha1_Context, data: []byte) {
- a, b, c, d, e, i, j, t: u32
- m: [80]u32
+ a, b, c, d, e, i, j, t: u32
+ m: [80]u32
for i, j = 0, 0; i < 16; i += 1 {
- m[i] = u32(data[j]) << 24 + u32(data[j + 1]) << 16 + u32(data[j + 2]) << 8 + u32(data[j + 3])
- j += 4
- }
+ m[i] =
+ u32(data[j]) << 24 + u32(data[j + 1]) << 16 + u32(data[j + 2]) << 8 + u32(data[j + 3])
+ j += 4
+ }
for i < 80 {
m[i] = (m[i - 3] ~ m[i - 8] ~ m[i - 14] ~ m[i - 16])
m[i] = (m[i] << 1) | (m[i] >> 31)
- i += 1
+ i += 1
}
a = ctx.state[0]
@@ -217,7 +217,7 @@ transform :: proc(ctx: ^Sha1_Context, data: []byte) {
c = util.ROTL32(b, 30)
b = a
a = t
- i += 1
+ i += 1
}
for i < 60 {
t = util.ROTL32(a, 5) + ((b & c) ~ (b & d) ~ (c & d)) + e + ctx.k[2] + m[i]
@@ -226,7 +226,7 @@ transform :: proc(ctx: ^Sha1_Context, data: []byte) {
c = util.ROTL32(b, 30)
b = a
a = t
- i += 1
+ i += 1
}
for i < 80 {
t = util.ROTL32(a, 5) + (b ~ c ~ d) + e + ctx.k[3] + m[i]
@@ -235,7 +235,7 @@ transform :: proc(ctx: ^Sha1_Context, data: []byte) {
c = util.ROTL32(b, 30)
b = a
a = t
- i += 1
+ i += 1
}
ctx.state[0] += a