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// Copyright © 2020 rsiddharth <s@ricketyspace.net>
// SPDX-License-Identifier: ISC
package challenge
import (
"fmt"
"ricketyspace.net/cryptopals/lib"
)
func C13() {
adminBlock := lib.BytesToStr(lib.Pkcs7Padding(lib.StrToBytes("admin"), 16))
ep := lib.WebProfileFor("foo@abacus" + adminBlock)
encryptedEP := lib.WebEncryptProfile(ep)
adminBlockCipher := encryptedEP[16:32] // Second block in the cipher
ep = lib.WebProfileFor("foo@abacus")
encryptedEP = lib.WebEncryptProfile(ep)
for i := 0; i < 16; i++ { // Replace last block with the admin cipher block.
encryptedEP[32+i] = adminBlockCipher[i]
}
adminEP := lib.WebDecryptProfile(encryptedEP)
adminProfile := lib.WebDecodeProfile(adminEP)
fmt.Printf("Admin Encoded Profile: %v\n", adminEP)
fmt.Printf("Admin Profile: %v\n", adminProfile)
}
// Output:
// Admin Encoded Profile: email=foo@abacus&uid=10001&role=admin
// Admin Profile: map[email:foo@abacus role:admin uid:10001]
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