ssi-data-integrity 0.3.0

Verifiable Credentials Data Model v1.1 for the `ssi` library.
Documentation 
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
154

use ssi_jwk::JWK;
use ssi_verification_methods::{AnyMethod, ReferenceOrOwned};

use crate::AnySuite;

impl AnySuite {
    #[allow(unused)]
    pub fn pick(
        jwk: &JWK,
        verification_method: Option<&ReferenceOrOwned<AnyMethod>>,
    ) -> Option<Self> {
        if let Some(vm) = verification_method {
            #[cfg(feature = "w3c")]
            if vm.id().starts_with("did:jwk:") {
                return Some(Self::JsonWebSignature2020);
            }
        }

        use ssi_jwk::Algorithm;
        let algorithm = jwk.get_algorithm()?;
        match algorithm {
            #[cfg(all(feature = "w3c", feature = "rsa"))]
            Algorithm::RS256 => Some(Self::RsaSignature2018),
            #[cfg(feature = "w3c")]
            Algorithm::PS256 => Some(Self::JsonWebSignature2020),
            #[cfg(feature = "w3c")]
            Algorithm::ES384 => Some(Self::JsonWebSignature2020),
            #[cfg(feature = "aleo")]
            Algorithm::AleoTestnet1Signature => Some(Self::AleoSignature2021),
            Algorithm::EdDSA | Algorithm::EdBlake2b => match verification_method {
                #[cfg(feature = "solana")]
                Some(vm)
                    if (vm.id().starts_with("did:sol:") || vm.id().starts_with("did:pkh:sol:"))
                        && vm.id().ends_with("#SolanaMethod2021") =>
                {
                    Some(Self::SolanaSignature2021)
                }
                #[cfg(feature = "tezos")]
                Some(vm)
                    if vm.id().starts_with("did:tz:") || vm.id().starts_with("did:pkh:tz:") =>
                {
                    if vm.id().ends_with("#TezosMethod2021") {
                        return Some(Self::TezosSignature2021);
                    }

                    #[cfg(feature = "ed25519")]
                    return Some(Self::Ed25519BLAKE2BDigestSize20Base58CheckEncodedSignature2021);

                    None
                }
                #[cfg(all(feature = "w3c", feature = "ed25519"))]
                _ => Some(Self::Ed25519Signature2018),
                #[cfg(not(all(feature = "w3c", feature = "ed25519")))]
                _ => {
                    // missing `ed25519` or `tezos` or `solana`.
                    None
                }
            },
            Algorithm::ES256 | Algorithm::ESBlake2b => match verification_method {
                #[cfg(feature = "tezos")]
                Some(vm)
                    if vm.id().starts_with("did:tz:") || vm.id().starts_with("did:pkh:tz:") =>
                {
                    if vm.id().ends_with("#TezosMethod2021") {
                        return Some(Self::TezosSignature2021);
                    }

                    #[cfg(feature = "secp256r1")]
                    return Some(Self::P256BLAKE2BDigestSize20Base58CheckEncodedSignature2021);

                    None
                }
                #[cfg(all(feature = "w3c", feature = "secp256r1"))]
                _ => Some(Self::EcdsaSecp256r1Signature2019),
                #[allow(unreachable_patterns)]
                _ => {
                    // missing `secp256r1` or `tezos` features.
                    None
                }
            },
            Algorithm::ES256K | Algorithm::ESBlake2bK => match verification_method {
                #[cfg(any(feature = "tezos", feature = "dif"))]
                #[allow(unreachable_code)]
                Some(vm)
                    if vm.id().starts_with("did:tz:") || vm.id().starts_with("did:pkh:tz:") =>
                {
                    #[cfg(feature = "tezos")]
                    if vm.id().ends_with("#TezosMethod2021") {
                        return Some(Self::TezosSignature2021);
                    }

                    #[cfg(all(feature = "dif", feature = "secp256k1"))]
                    return Some(Self::EcdsaSecp256k1RecoverySignature2020);

                    None
                }
                #[cfg(all(feature = "w3c", feature = "secp256k1"))]
                _ => Some(Self::EcdsaSecp256k1Signature2019),
                #[allow(unreachable_patterns)]
                _ => None,
            },
            Algorithm::ES256KR => {
                // #[allow(clippy::if_same_then_else)]
                #[cfg(all(feature = "w3c", feature = "eip712"))]
                if use_eip712sig(jwk) {
                    return Some(Self::EthereumEip712Signature2021);
                }
                #[cfg(all(feature = "ethereum", feature = "secp256k1"))]
                if use_epsig(jwk) {
                    return Some(Self::EthereumPersonalSignature2021);
                }

                match verification_method {
                    #[cfg(all(feature = "ethereum", feature = "eip712"))]
                    Some(vm)
                        if (vm.id().starts_with("did:ethr:")
                            || vm.id().starts_with("did:pkh:eth:"))
                            && vm.id().ends_with("#Eip712Method2021") =>
                    {
                        Some(Self::Eip712Signature2021)
                    }

                    #[cfg(all(feature = "dif", feature = "secp256k1"))]
                    _ => Some(Self::EcdsaSecp256k1RecoverySignature2020),
                    #[allow(unreachable_patterns)]
                    _ => None,
                }
            }
            _ => None,
        }
    }
}

#[cfg(all(feature = "w3c", feature = "eip712"))]
fn use_eip712sig(key: &JWK) -> bool {
    // deprecated: allow using unregistered "signTypedData" key operation value to indicate using EthereumEip712Signature2021
    if let Some(ref key_ops) = key.key_operations {
        if key_ops.contains(&"signTypedData".to_string()) {
            return true;
        }
    }
    false
}

#[cfg(all(feature = "ethereum", feature = "secp256k1"))]
fn use_epsig(key: &JWK) -> bool {
    // deprecated: allow using unregistered "signPersonalMessage" key operation value to indicate using EthereumPersonalSignature2021
    if let Some(ref key_ops) = key.key_operations {
        if key_ops.contains(&"signPersonalMessage".to_string()) {
            return true;
        }
    }
    false
}