Initial project import
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module blowfish
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// expand_key performs a key expansion on the given Blowfish cipher.
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@[direct_array_access]
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pub fn expand_key(key []u8, mut bf Blowfish) {
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mut j := 0
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for i := 0; i < 18; i++ {
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mut d := u32(0)
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for k := 0; k < 4; k++ {
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d = d << 8 | u32(key[j])
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j++
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if j >= key.len {
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j = 0
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}
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}
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bf.p[i] ^= d
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}
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mut l := u32(0)
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mut r := u32(0)
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for i := 0; i < 18; i += 2 {
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l, r = setup_tables(l, r, mut bf)
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bf.p[i], bf.p[i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l, r = setup_tables(l, r, mut bf)
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bf.s[0][i], bf.s[0][i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l, r = setup_tables(l, r, mut bf)
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bf.s[1][i], bf.s[1][i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l, r = setup_tables(l, r, mut bf)
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bf.s[2][i], bf.s[2][i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l, r = setup_tables(l, r, mut bf)
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bf.s[3][i], bf.s[3][i + 1] = l, r
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}
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}
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// expand_key_with_salt using salt to expand the key.
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@[direct_array_access]
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pub fn expand_key_with_salt(key []u8, salt []u8, mut bf Blowfish) {
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mut j := 0
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for i := 0; i < 18; i++ {
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bf.p[i] ^= get_next_word(key, &j)
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}
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j = 0
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mut l := u32(0)
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mut r := u32(0)
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for i := 0; i < 18; i += 2 {
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l ^= get_next_word(salt, &j)
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r ^= get_next_word(salt, &j)
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l, r = setup_tables(l, r, mut bf)
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bf.p[i], bf.p[i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l ^= get_next_word(salt, &j)
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r ^= get_next_word(salt, &j)
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l, r = setup_tables(l, r, mut bf)
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bf.s[0][i], bf.s[0][i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l ^= get_next_word(salt, &j)
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r ^= get_next_word(salt, &j)
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l, r = setup_tables(l, r, mut bf)
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bf.s[1][i], bf.s[1][i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l ^= get_next_word(salt, &j)
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r ^= get_next_word(salt, &j)
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l, r = setup_tables(l, r, mut bf)
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bf.s[2][i], bf.s[2][i + 1] = l, r
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}
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for i := 0; i < 256; i += 2 {
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l ^= get_next_word(salt, &j)
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r ^= get_next_word(salt, &j)
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l, r = setup_tables(l, r, mut bf)
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bf.s[3][i], bf.s[3][i + 1] = l, r
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}
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}
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// setup_tables sets up the Blowfish cipher's pi and substitution tables.
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@[direct_array_access]
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fn setup_tables(l u32, r u32, mut bf Blowfish) (u32, u32) {
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mut xl := l
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mut xr := r
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xl ^= bf.p[0]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[1]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[2]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[3]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[4]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[5]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[6]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[7]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[8]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[9]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[10]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[11]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[12]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[13]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[14]
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xr ^= ((bf.s[0][u8(xl >> 24)] + bf.s[1][u8(xl >> 16)]) ^ bf.s[2][u8(xl >> 8)]) + bf.s[3][u8(xl)] ^ bf.p[15]
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xl ^= ((bf.s[0][u8(xr >> 24)] + bf.s[1][u8(xr >> 16)]) ^ bf.s[2][u8(xr >> 8)]) + bf.s[3][u8(xr)] ^ bf.p[16]
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xr ^= bf.p[17]
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return xr, xl
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}
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// get_next_word returns the next big-endian u32 value from the byte
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// slice at the given position in a circular manner, updating the position.
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@[direct_array_access]
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fn get_next_word(b []u8, pos &int) u32 {
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mut w := u32(0)
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mut j := 0
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unsafe {
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j = *pos
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}
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for i := 0; i < 4; i++ {
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w = w << 8 | u32(b[j])
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j++
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if j >= b.len {
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j = 0
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}
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}
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unsafe {
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*pos = j
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}
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return w
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}
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@@ -0,0 +1,45 @@
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module blowfish
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pub struct Blowfish {
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pub mut:
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p [18]u32
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s [4][256]u32
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}
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// new_cipher creates and returns a new Blowfish cipher.
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// The key argument should be the Blowfish key, from 1 to 56 bytes.
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pub fn new_cipher(key []u8) !Blowfish {
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mut bf := Blowfish{}
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unsafe { vmemcpy(&bf.p[0], &p[0], int(sizeof(bf.p))) }
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unsafe { vmemcpy(&bf.s[0], &s[0], int(sizeof(bf.s))) }
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if key.len < 1 || key.len > 56 {
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return error('invalid key')
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}
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expand_key(key, mut bf)
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return bf
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}
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// new_salted_cipher returns a new Blowfish cipher that folds a salt into its key schedule.
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pub fn new_salted_cipher(key []u8, salt []u8) !Blowfish {
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if salt.len == 0 {
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return new_cipher(key)
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}
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mut bf := Blowfish{}
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unsafe { vmemcpy(&bf.p[0], &p[0], int(sizeof(bf.p))) }
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unsafe { vmemcpy(&bf.s[0], &s[0], int(sizeof(bf.s))) }
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if key.len < 1 {
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return error('invalid key')
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}
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expand_key_with_salt(key, salt, mut bf)
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return bf
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}
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// encrypt encrypts the 8-byte buffer src using the key k and stores the result in dst.
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pub fn (mut bf Blowfish) encrypt(mut dst []u8, src []u8) {
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mut l := u32(src[0]) << 24 | u32(src[1]) << 16 | u32(src[2]) << 8 | u32(src[3])
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mut r := u32(src[4]) << 24 | u32(src[5]) << 16 | u32(src[6]) << 8 | u32(src[7])
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l, r = setup_tables(l, r, mut bf)
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dst[0], dst[1], dst[2], dst[3] = u8(l >> 24), u8(l >> 16), u8(l >> 8), u8(l)
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dst[4], dst[5], dst[6], dst[7] = u8(r >> 24), u8(r >> 16), u8(r >> 8), u8(r)
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}
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@@ -0,0 +1,197 @@
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import crypto.blowfish
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import encoding.base64
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struct TestCase {
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key []u8
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input []u8
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output []u8
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}
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// Test vector values are from https://www.schneier.com/code/vectors.txt.
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const tests = [
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TestCase{
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key: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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input: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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output: [u8(0x4E), 0xF9, 0x97, 0x45, 0x61, 0x98, 0xDD, 0x78]
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},
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TestCase{
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key: [u8(0xFF), 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]
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input: [u8(0xFF), 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]
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output: [u8(0x51), 0x86, 0x6F, 0xD5, 0xB8, 0x5E, 0xCB, 0x8A]
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},
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TestCase{
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key: [u8(0x30), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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input: [u8(0x10), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01]
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output: [u8(0x7D), 0x85, 0x6F, 0x9A, 0x61, 0x30, 0x63, 0xF2]
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},
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TestCase{
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key: [u8(0x11), 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11]
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input: [u8(0x11), 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11]
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output: [u8(0x24), 0x66, 0xDD, 0x87, 0x8B, 0x96, 0x3C, 0x9D]
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},
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TestCase{
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key: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
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input: [u8(0x11), 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11]
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output: [u8(0x61), 0xF9, 0xC3, 0x80, 0x22, 0x81, 0xB0, 0x96]
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},
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TestCase{
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key: [u8(0x11), 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11]
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input: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
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output: [u8(0x7D), 0x0C, 0xC6, 0x30, 0xAF, 0xDA, 0x1E, 0xC7]
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},
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TestCase{
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key: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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input: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
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output: [u8(0x4E), 0xF9, 0x97, 0x45, 0x61, 0x98, 0xDD, 0x78]
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},
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TestCase{
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key: [u8(0xFE), 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10]
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input: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
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output: [u8(0x0A), 0xCE, 0xAB, 0x0F, 0xC6, 0xA0, 0xA2, 0x8D]
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},
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TestCase{
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key: [u8(0x7C), 0xA1, 0x10, 0x45, 0x4A, 0x1A, 0x6E, 0x57]
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input: [u8(0x01), 0xA1, 0xD6, 0xD0, 0x39, 0x77, 0x67, 0x42]
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output: [u8(0x59), 0xC6, 0x82, 0x45, 0xEB, 0x05, 0x28, 0x2B]
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},
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TestCase{
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key: [u8(0x01), 0x31, 0xD9, 0x61, 0x9D, 0xC1, 0x37, 0x6E]
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input: [u8(0x5C), 0xD5, 0x4C, 0xA8, 0x3D, 0xEF, 0x57, 0xDA]
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output: [u8(0xB1), 0xB8, 0xCC, 0x0B, 0x25, 0x0F, 0x09, 0xA0]
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},
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TestCase{
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key: [u8(0x07), 0xA1, 0x13, 0x3E, 0x4A, 0x0B, 0x26, 0x86]
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input: [u8(0x02), 0x48, 0xD4, 0x38, 0x06, 0xF6, 0x71, 0x72]
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output: [u8(0x17), 0x30, 0xE5, 0x77, 0x8B, 0xEA, 0x1D, 0xA4]
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},
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TestCase{
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key: [u8(0x38), 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E]
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input: [u8(0x51), 0x45, 0x4B, 0x58, 0x2D, 0xDF, 0x44, 0x0A]
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output: [u8(0xA2), 0x5E, 0x78, 0x56, 0xCF, 0x26, 0x51, 0xEB]
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},
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TestCase{
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key: [u8(0x04), 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6]
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input: [u8(0x42), 0xFD, 0x44, 0x30, 0x59, 0x57, 0x7F, 0xA2]
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output: [u8(0x35), 0x38, 0x82, 0xB1, 0x09, 0xCE, 0x8F, 0x1A]
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},
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TestCase{
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key: [u8(0x01), 0x13, 0xB9, 0x70, 0xFD, 0x34, 0xF2, 0xCE]
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input: [u8(0x05), 0x9B, 0x5E, 0x08, 0x51, 0xCF, 0x14, 0x3A]
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output: [u8(0x48), 0xF4, 0xD0, 0x88, 0x4C, 0x37, 0x99, 0x18]
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},
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TestCase{
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key: [u8(0x01), 0x70, 0xF1, 0x75, 0x46, 0x8F, 0xB5, 0xE6]
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input: [u8(0x07), 0x56, 0xD8, 0xE0, 0x77, 0x47, 0x61, 0xD2]
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output: [u8(0x43), 0x21, 0x93, 0xB7, 0x89, 0x51, 0xFC, 0x98]
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},
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TestCase{
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key: [u8(0x43), 0x29, 0x7F, 0xAD, 0x38, 0xE3, 0x73, 0xFE]
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input: [u8(0x76), 0x25, 0x14, 0xB8, 0x29, 0xBF, 0x48, 0x6A]
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output: [u8(0x13), 0xF0, 0x41, 0x54, 0xD6, 0x9D, 0x1A, 0xE5]
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},
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TestCase{
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key: [u8(0x07), 0xA7, 0x13, 0x70, 0x45, 0xDA, 0x2A, 0x16]
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input: [u8(0x3B), 0xDD, 0x11, 0x90, 0x49, 0x37, 0x28, 0x02]
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output: [u8(0x2E), 0xED, 0xDA, 0x93, 0xFF, 0xD3, 0x9C, 0x79]
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},
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TestCase{
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key: [u8(0x04), 0x68, 0x91, 0x04, 0xC2, 0xFD, 0x3B, 0x2F]
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input: [u8(0x26), 0x95, 0x5F, 0x68, 0x35, 0xAF, 0x60, 0x9A]
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output: [u8(0xD8), 0x87, 0xE0, 0x39, 0x3C, 0x2D, 0xA6, 0xE3]
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},
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TestCase{
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key: [u8(0x37), 0xD0, 0x6B, 0xB5, 0x16, 0xCB, 0x75, 0x46]
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input: [u8(0x16), 0x4D, 0x5E, 0x40, 0x4F, 0x27, 0x52, 0x32]
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output: [u8(0x5F), 0x99, 0xD0, 0x4F, 0x5B, 0x16, 0x39, 0x69]
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},
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TestCase{
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key: [u8(0x1F), 0x08, 0x26, 0x0D, 0x1A, 0xC2, 0x46, 0x5E]
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input: [u8(0x6B), 0x05, 0x6E, 0x18, 0x75, 0x9F, 0x5C, 0xCA]
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output: [u8(0x4A), 0x05, 0x7A, 0x3B, 0x24, 0xD3, 0x97, 0x7B]
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},
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TestCase{
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key: [u8(0x58), 0x40, 0x23, 0x64, 0x1A, 0xBA, 0x61, 0x76]
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input: [u8(0x00), 0x4B, 0xD6, 0xEF, 0x09, 0x17, 0x60, 0x62]
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output: [u8(0x45), 0x20, 0x31, 0xC1, 0xE4, 0xFA, 0xDA, 0x8E]
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},
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TestCase{
|
||||
key: [u8(0x02), 0x58, 0x16, 0x16, 0x46, 0x29, 0xB0, 0x07]
|
||||
input: [u8(0x48), 0x0D, 0x39, 0x00, 0x6E, 0xE7, 0x62, 0xF2]
|
||||
output: [u8(0x75), 0x55, 0xAE, 0x39, 0xF5, 0x9B, 0x87, 0xBD]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x49), 0x79, 0x3E, 0xBC, 0x79, 0xB3, 0x25, 0x8F]
|
||||
input: [u8(0x43), 0x75, 0x40, 0xC8, 0x69, 0x8F, 0x3C, 0xFA]
|
||||
output: [u8(0x53), 0xC5, 0x5F, 0x9C, 0xB4, 0x9F, 0xC0, 0x19]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x4F), 0xB0, 0x5E, 0x15, 0x15, 0xAB, 0x73, 0xA7]
|
||||
input: [u8(0x07), 0x2D, 0x43, 0xA0, 0x77, 0x07, 0x52, 0x92]
|
||||
output: [u8(0x7A), 0x8E, 0x7B, 0xFA, 0x93, 0x7E, 0x89, 0xA3]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x49), 0xE9, 0x5D, 0x6D, 0x4C, 0xA2, 0x29, 0xBF]
|
||||
input: [u8(0x02), 0xFE, 0x55, 0x77, 0x81, 0x17, 0xF1, 0x2A]
|
||||
output: [u8(0xCF), 0x9C, 0x5D, 0x7A, 0x49, 0x86, 0xAD, 0xB5]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x01), 0x83, 0x10, 0xDC, 0x40, 0x9B, 0x26, 0xD6]
|
||||
input: [u8(0x1D), 0x9D, 0x5C, 0x50, 0x18, 0xF7, 0x28, 0xC2]
|
||||
output: [u8(0xD1), 0xAB, 0xB2, 0x90, 0x65, 0x8B, 0xC7, 0x78]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x1C), 0x58, 0x7F, 0x1C, 0x13, 0x92, 0x4F, 0xEF]
|
||||
input: [u8(0x30), 0x55, 0x32, 0x28, 0x6D, 0x6F, 0x29, 0x5A]
|
||||
output: [u8(0x55), 0xCB, 0x37, 0x74, 0xD1, 0x3E, 0xF2, 0x01]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x01), 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01]
|
||||
input: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
|
||||
output: [u8(0xFA), 0x34, 0xEC, 0x48, 0x47, 0xB2, 0x68, 0xB2]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x1F), 0x1F, 0x1F, 0x1F, 0x0E, 0x0E, 0x0E, 0x0E]
|
||||
input: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
|
||||
output: [u8(0xA7), 0x90, 0x79, 0x51, 0x08, 0xEA, 0x3C, 0xAE]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0xE0), 0xFE, 0xE0, 0xFE, 0xF1, 0xFE, 0xF1, 0xFE]
|
||||
input: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
|
||||
output: [u8(0xC3), 0x9E, 0x07, 0x2D, 0x9F, 0xAC, 0x63, 0x1D]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
|
||||
input: [u8(0xFF), 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]
|
||||
output: [u8(0x01), 0x49, 0x33, 0xE0, 0xCD, 0xAF, 0xF6, 0xE4]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0xFF), 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]
|
||||
input: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
|
||||
output: [u8(0xF2), 0x1E, 0x9A, 0x77, 0xB7, 0x1C, 0x49, 0xBC]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0x01), 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF]
|
||||
input: [u8(0x00), 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
|
||||
output: [u8(0x24), 0x59, 0x46, 0x88, 0x57, 0x54, 0x36, 0x9A]
|
||||
},
|
||||
TestCase{
|
||||
key: [u8(0xFE), 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10]
|
||||
input: [u8(0xFF), 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF]
|
||||
output: [u8(0x6B), 0x5C, 0x5A, 0x9C, 0x5D, 0x9E, 0x0A, 0x5A]
|
||||
},
|
||||
]
|
||||
|
||||
fn test_crypto_blowfish() {
|
||||
key := 'password'.bytes()
|
||||
csalt := base64.decode('an2da3dn')
|
||||
bf := blowfish.new_salted_cipher(key, csalt) or { panic(err) }
|
||||
}
|
||||
|
||||
fn test_encrypt() {
|
||||
for t in tests {
|
||||
mut bf := blowfish.new_cipher(t.key) or { panic(err) }
|
||||
mut out := []u8{len: t.output.len}
|
||||
bf.encrypt(mut out, t.input)
|
||||
assert out == t.output
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large.
Load diff
Reference in new issue
Block a user