1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153

use crate::DebugApi;
use ed25519_dalek::*;
use multiversx_sc::{
    api::{
        CryptoApi, CryptoApiImpl, ManagedBufferApi, KECCAK256_RESULT_LEN, RIPEMD_RESULT_LEN,
        SHA256_RESULT_LEN,
    },
    types::{heap::BoxedBytes, MessageHashType},
};
use sha2::Sha256;
use sha3::{Digest, Keccak256};

impl CryptoApi for DebugApi {
    type CryptoApiImpl = DebugApi;

    fn crypto_api_impl() -> Self::CryptoApiImpl {
        DebugApi::new_from_static()
    }
}

impl CryptoApiImpl for DebugApi {
    fn sha256_legacy(&self, data: &[u8]) -> [u8; SHA256_RESULT_LEN] {
        let mut hasher = Sha256::new();
        hasher.update(data);
        hasher.finalize().into()
    }

    fn sha256_managed(
        &self,
        dest: Self::ManagedBufferHandle,
        data_handle: Self::ManagedBufferHandle,
    ) {
        // default implementation used in debugger
        // the VM has a dedicated hook
        let result_bytes = self.sha256_legacy(self.mb_to_boxed_bytes(data_handle).as_slice());
        self.mb_overwrite(dest, &result_bytes[..]);
    }

    fn keccak256_legacy(&self, data: &[u8]) -> [u8; KECCAK256_RESULT_LEN] {
        let mut hasher = Keccak256::new();
        hasher.update(data);
        hasher.finalize().into()
    }

    fn keccak256_managed(
        &self,
        dest: Self::ManagedBufferHandle,
        data_handle: Self::ManagedBufferHandle,
    ) {
        // default implementation used in debugger
        // the VM has a dedicated hook
        let result_bytes = self.keccak256_legacy(self.mb_to_boxed_bytes(data_handle).as_slice());
        self.mb_overwrite(dest, &result_bytes[..]);
    }

    fn ripemd160_legacy(&self, _data: &[u8]) -> [u8; RIPEMD_RESULT_LEN] {
        panic!("ripemd160 not implemented yet!")
    }

    fn ripemd160_managed(
        &self,
        _dest: Self::ManagedBufferHandle,
        _data_handle: Self::ManagedBufferHandle,
    ) {
        panic!("ripemd160 not implemented yet!")
    }

    fn verify_bls_legacy(&self, _key: &[u8], _message: &[u8], _signature: &[u8]) -> bool {
        panic!("verify_bls not implemented yet!")
    }

    fn verify_bls_managed(
        &self,
        _key: Self::ManagedBufferHandle,
        _message: Self::ManagedBufferHandle,
        _signature: Self::ManagedBufferHandle,
    ) -> bool {
        panic!("verify_bls not implemented yet!")
    }

    fn verify_ed25519_legacy(&self, key: &[u8], message: &[u8], signature: &[u8]) -> bool {
        let public = PublicKey::from_bytes(key);
        if public.is_err() {
            return false;
        }

        let sig = Signature::from_bytes(signature);
        if sig.is_err() {
            return false;
        }

        public.unwrap().verify(message, &sig.unwrap()).is_ok()
    }

    fn verify_ed25519_managed(
        &self,
        key: Self::ManagedBufferHandle,
        message: Self::ManagedBufferHandle,
        signature: Self::ManagedBufferHandle,
    ) -> bool {
        self.verify_ed25519_legacy(
            self.mb_to_boxed_bytes(key).as_slice(),
            self.mb_to_boxed_bytes(message).as_slice(),
            self.mb_to_boxed_bytes(signature).as_slice(),
        )
    }

    fn verify_secp256k1_legacy(&self, _key: &[u8], _message: &[u8], _signature: &[u8]) -> bool {
        panic!("verify_secp256k1 not implemented yet!")
    }

    fn verify_secp256k1_managed(
        &self,
        _key: Self::ManagedBufferHandle,
        _message: Self::ManagedBufferHandle,
        _signature: Self::ManagedBufferHandle,
    ) -> bool {
        panic!("verify_secp256k1 not implemented yet!")
    }

    fn verify_custom_secp256k1_legacy(
        &self,
        _key: &[u8],
        _message: &[u8],
        _signature: &[u8],
        _hash_type: MessageHashType,
    ) -> bool {
        panic!("verify_custom_secp256k1 not implemented yet!")
    }

    fn verify_custom_secp256k1_managed(
        &self,
        _key: Self::ManagedBufferHandle,
        _message: Self::ManagedBufferHandle,
        _signature: Self::ManagedBufferHandle,
        _hash_type: MessageHashType,
    ) -> bool {
        panic!("verify_custom_secp256k1 not implemented yet!")
    }

    fn encode_secp256k1_der_signature_legacy(&self, _r: &[u8], _s: &[u8]) -> BoxedBytes {
        panic!("encode_secp256k1_signature not implemented yet!")
    }

    fn encode_secp256k1_der_signature_managed(
        &self,
        _r: Self::ManagedBufferHandle,
        _s: Self::ManagedBufferHandle,
        _dest: Self::ManagedBufferHandle,
    ) {
        panic!("encode_secp256k1_signature not implemented yet!")
    }
}