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crypto.blowfish: add doc comments for the public API (#12609)

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Taillook
2021-11-30 05:19:52 +09:00
committed by GitHub
parent 14424100e8
commit bbc47562b3
2 changed files with 21 additions and 12 deletions
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6
vlib/crypto/blowfish/blowfish.v
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@@ -6,6 +6,8 @@ pub mut:
s [4][256]u32
}
// new_cipher creates and returns a new Blowfish cipher.
// The key argument should be the Blowfish key, from 1 to 56 bytes.
pub fn new_cipher(key []byte) ?Blowfish {
mut bf := Blowfish{}
unsafe { vmemcpy(&bf.p[0], &p[0], int(sizeof(bf.p))) }
@@ -18,6 +20,7 @@ pub fn new_cipher(key []byte) ?Blowfish {
return bf
}
// new_salted_cipher returns a new Blowfish cipher that folds a salt into its key schedule.
pub fn new_salted_cipher(key []byte, salt []byte) ?Blowfish {
if salt.len == 0 {
return new_cipher(key)
@@ -32,10 +35,11 @@ pub fn new_salted_cipher(key []byte, salt []byte) ?Blowfish {
return bf
}
// encrypt encrypts the 8-byte buffer src using the key k and stores the result in dst.
pub fn (mut bf Blowfish) encrypt(mut dst []byte, src []byte) {
l := u32(src[0]) << 24 | u32(src[1]) << 16 | u32(src[2]) << 8 | u32(src[3])
r := u32(src[4]) << 24 | u32(src[5]) << 16 | u32(src[6]) << 8 | u32(src[7])
arr := encrypt_block(l, r, mut bf)
arr := setup_tables(l, r, mut bf)
dst[0], dst[1], dst[2], dst[3] = byte(arr[0] >> 24), byte(arr[0] >> 16), byte(arr[0] >> 8), byte(arr[0])
dst[4], dst[5], dst[6], dst[7] = byte(arr[1] >> 24), byte(arr[1] >> 16), byte(arr[1] >> 8), byte(arr[1])
}