samples validation failure

[Geoffroy Couprie]

when running the samples generation with the `--test option, I get different keys than what was displayed at creation. This does not change the result of the validation though, so probably an issue when printing the keys

< left / > right
 Biscuit {
     symbols: []
     public keys: ["
<a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
>229697541ba393f2a30559ef12b6d7d2403c8d9fe9b8164024894b5cc58638c9
 "]
     authority: Block {
             symbols: []
             version: 4
             context: ""
             external key: 
             public keys: ["
<a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
>229697541ba393f2a30559ef12b6d7d2403c8d9fe9b8164024894b5cc58638c9
 "]
             scopes: []
             facts: [
                 right("read")
             ]
             rules: []
             checks: [
                 check if group("admin") trusting ed25519/
<a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
>229697541ba393f2a30559ef12b6d7d2403c8d9fe9b8164024894b5cc58638c9
 
             ]
         }
     blocks: [
         Block {
             symbols: []
             version: 4
             context: ""
             external key: 
<a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
>229697541ba393f2a30559ef12b6d7d2403c8d9fe9b8164024894b5cc58638c9
 
             public keys: []
             scopes: []
             facts: [
                 group("admin")
             ]
             rules: []
             checks: [
                 check if right("read")
             ]
         }
     ]
 }

< left / > right
 Biscuit {
     symbols: []
     public keys: ["
<3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59", "ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee", "2e0118e63beb7731dab5119280ddb117234d0cdc41b7dd5dc4241bcbbb585d14
>a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25", "b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284", "3c1c4fa6c463ba8fb4ab60ec907d0282425d1e6c2e153df941fb917cfb877c2b
 "]
     authority: Block {
             symbols: []
             version: 4
             context: ""
             external key: 
             public keys: ["
<3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59
>a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
 "]
             scopes: []
             facts: [
                 query(0)
             ]
             rules: []
             checks: [
                 check if true trusting previous, ed25519/
<3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59
>a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
 
             ]
         }
     blocks: [
         Block {
             symbols: []
             version: 4
             context: ""
             external key: 
<3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59
<            public keys: ["ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee
>a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
>            public keys: ["b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284
 "]
             scopes: []
             facts: [
                 query(1)
             ]
             rules: [
                 query(1, 2) <- query(1), query(2) trusting ed25519/
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284
 
             ]
             checks: [
                 check if query(2), query(3) trusting ed25519/
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee,
<                check if query(1) trusting ed25519/3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284,
>                check if query(1) trusting ed25519/a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
 
             ]
         },
 	Block {
             symbols: []
             version: 4
             context: ""
             external key: 
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284
 
             public keys: []
             scopes: []
             facts: [
                 query(2)
             ]
             rules: []
             checks: [
                 check if query(2), query(3) trusting ed25519/
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee,
<                check if query(1) trusting ed25519/3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284,
>                check if query(1) trusting ed25519/a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
 
             ]
         },
 	Block {
             symbols: []
             version: 4
             context: ""
             external key: 
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284
 
             public keys: []
             scopes: []
             facts: [
                 query(3)
             ]
             rules: []
             checks: [
                 check if query(2), query(3) trusting ed25519/
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee,
<                check if query(1) trusting ed25519/3c8aeced6363b8a862552fb2b0b4b8b0f8244e8cef3c11c3e55fd553f3a90f59
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284,
>                check if query(1) trusting ed25519/a424157b8c00c25214ea39894bf395650d88426147679a9dd43a64d65ae5bc25
 
             ]
         },
 	Block {
             symbols: []
             version: 4
             context: ""
             external key: 
             public keys: ["
<2e0118e63beb7731dab5119280ddb117234d0cdc41b7dd5dc4241bcbbb585d14
>3c1c4fa6c463ba8fb4ab60ec907d0282425d1e6c2e153df941fb917cfb877c2b
 "]
             scopes: []
             facts: [
                 query(4)
             ]
             rules: []
             checks: [
                 check if query(2) trusting ed25519/
<ecfb8ed11fd9e6be133ca4dd8d229d39c7dcb2d659704c39e82fd7acf0d12dee,
<                check if query(4) trusting ed25519/2e0118e63beb7731dab5119280ddb117234d0cdc41b7dd5dc4241bcbbb585d14
>b7e2c7cea042431f9e7e0e0decd8503d58569330e6ed6eaa13187f518102a284,
>                check if query(4) trusting ed25519/3c1c4fa6c463ba8fb4ab60ec907d0282425d1e6c2e153df941fb917cfb877c2b
 
             ]
         }
     ]
 }

[Geoffroy Couprie]

this only affects the third party block and pub key interning tests

[Geoffroy Couprie]

this is not an issue in biscuit crypto, but with the rng in the testcases. The same generator is passed from one sample generation to the next, so if there's a difference somewhere in its usage between the generation and the test, then it will generate different token. When creating a deterministic rng specifically for this test, the bug disappears

[Geoffroy Couprie]

fixed by #159