Wala shell

Advanced PHP File Manager

Server IP: 127.0.0.1 | PHP Version: 8.3.30 | Domains Hosted: 54

Name	Size	Last Modified	Actions
📁 ..	-	2025-05-25 12:27
📄 pbkdf2.go // Copyright 2012 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. /* Package pbkdf2 implements the key derivation function PBKDF2 as defined in RFC 2898 / PKCS #5 v2.0. A key derivation function is useful when encrypting data based on a password or any other not-fully-random data. It uses a pseudorandom function to derive a secure encryption key based on the password. While v2.0 of the standard defines only one pseudorandom function to use, HMAC-SHA1, the drafted v2.1 specification allows use of all five FIPS Approved Hash Functions SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 for HMAC. To choose, you can pass the `New` functions from the different SHA packages to pbkdf2.Key. / package pbkdf2 import ( "crypto/hmac" "hash" ) // Key derives a key from the password, salt and iteration count, returning a // []byte of length keylen that can be used as cryptographic key. The key is // derived based on the method described as PBKDF2 with the HMAC variant using // the supplied hash function. // // For example, to use a HMAC-SHA-1 based PBKDF2 key derivation function, you // can get a derived key for e.g. AES-256 (which needs a 32-byte key) by // doing: // // dk := pbkdf2.Key([]byte("some password"), salt, 4096, 32, sha1.New) // // Remember to get a good random salt. At least 8 bytes is recommended by the // RFC. // // Using a higher iteration count will increase the cost of an exhaustive // search but will also make derivation proportionally slower. func Key(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte { prf := hmac.New(h, password) hashLen := prf.Size() numBlocks := (keyLen + hashLen - 1) / hashLen var buf [4]byte dk := make([]byte, 0, numBlockshashLen) U := make([]byte, hashLen) for block := 1; block <= numBlocks; block++ { // N.B.: \|\| means concatenation, ^ means XOR // for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter // U_1 = PRF(password, salt \|\| uint(i)) prf.Reset() prf.Write(salt) buf[0] = byte(block >> 24) buf[1] = byte(block >> 16) buf[2] = byte(block >> 8) buf[3] = byte(block) prf.Write(buf[:4]) dk = prf.Sum(dk) T := dk[len(dk)-hashLen:] copy(U, T) // U_n = PRF(password, U_(n-1)) for n := 2; n <= iter; n++ { prf.Reset() prf.Write(U) U = U[:0] U = prf.Sum(U) for x := range U { T[x] ^= U[x] } } } return dk[:keyLen] }	2.39 KB	2025-05-25 12:27
📄 pbkdf2_test.go // Copyright 2012 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. package pbkdf2 import ( "bytes" "crypto/sha1" "crypto/sha256" "hash" "testing" ) type testVector struct { password string salt string iter int output []byte } // Test vectors from RFC 6070, http://tools.ietf.org/html/rfc6070 var sha1TestVectors = []testVector{ { "password", "salt", 1, []byte{ 0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71, 0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06, 0x2f, 0xe0, 0x37, 0xa6, }, }, { "password", "salt", 2, []byte{ 0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c, 0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0, 0xd8, 0xde, 0x89, 0x57, }, }, { "password", "salt", 4096, []byte{ 0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a, 0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0, 0x65, 0xa4, 0x29, 0xc1, }, }, // // This one takes too long // { // "password", // "salt", // 16777216, // []byte{ // 0xee, 0xfe, 0x3d, 0x61, 0xcd, 0x4d, 0xa4, 0xe4, // 0xe9, 0x94, 0x5b, 0x3d, 0x6b, 0xa2, 0x15, 0x8c, // 0x26, 0x34, 0xe9, 0x84, // }, // }, { "passwordPASSWORDpassword", "saltSALTsaltSALTsaltSALTsaltSALTsalt", 4096, []byte{ 0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b, 0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a, 0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70, 0x38, }, }, { "pass\000word", "sa\000lt", 4096, []byte{ 0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d, 0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3, }, }, } // Test vectors from // http://stackoverflow.com/questions/5130513/pbkdf2-hmac-sha2-test-vectors var sha256TestVectors = []testVector{ { "password", "salt", 1, []byte{ 0x12, 0x0f, 0xb6, 0xcf, 0xfc, 0xf8, 0xb3, 0x2c, 0x43, 0xe7, 0x22, 0x52, 0x56, 0xc4, 0xf8, 0x37, 0xa8, 0x65, 0x48, 0xc9, }, }, { "password", "salt", 2, []byte{ 0xae, 0x4d, 0x0c, 0x95, 0xaf, 0x6b, 0x46, 0xd3, 0x2d, 0x0a, 0xdf, 0xf9, 0x28, 0xf0, 0x6d, 0xd0, 0x2a, 0x30, 0x3f, 0x8e, }, }, { "password", "salt", 4096, []byte{ 0xc5, 0xe4, 0x78, 0xd5, 0x92, 0x88, 0xc8, 0x41, 0xaa, 0x53, 0x0d, 0xb6, 0x84, 0x5c, 0x4c, 0x8d, 0x96, 0x28, 0x93, 0xa0, }, }, { "passwordPASSWORDpassword", "saltSALTsaltSALTsaltSALTsaltSALTsalt", 4096, []byte{ 0x34, 0x8c, 0x89, 0xdb, 0xcb, 0xd3, 0x2b, 0x2f, 0x32, 0xd8, 0x14, 0xb8, 0x11, 0x6e, 0x84, 0xcf, 0x2b, 0x17, 0x34, 0x7e, 0xbc, 0x18, 0x00, 0x18, 0x1c, }, }, { "pass\000word", "sa\000lt", 4096, []byte{ 0x89, 0xb6, 0x9d, 0x05, 0x16, 0xf8, 0x29, 0x89, 0x3c, 0x69, 0x62, 0x26, 0x65, 0x0a, 0x86, 0x87, }, }, } func testHash(t testing.T, h func() hash.Hash, hashName string, vectors []testVector) { for i, v := range vectors { o := Key([]byte(v.password), []byte(v.salt), v.iter, len(v.output), h) if !bytes.Equal(o, v.output) { t.Errorf("%s %d: expected %x, got %x", hashName, i, v.output, o) } } } func TestWithHMACSHA1(t testing.T) { testHash(t, sha1.New, "SHA1", sha1TestVectors) } func TestWithHMACSHA256(t testing.T) { testHash(t, sha256.New, "SHA256", sha256TestVectors) } var sink uint8 func benchmark(b testing.B, h func() hash.Hash) { password := make([]byte, h().Size()) salt := make([]byte, 8) for i := 0; i < b.N; i++ { password = Key(password, salt, 4096, len(password), h) } sink += password[0] } func BenchmarkHMACSHA1(b testing.B) { benchmark(b, sha1.New) } func BenchmarkHMACSHA256(b testing.B) { benchmark(b, sha256.New) }	3.55 KB	2025-05-25 12:27

Terminal