BlindSignatureProtocol

chie_crypto::blind

Struct BlindSignatureProtocol 

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pub struct BlindSignatureProtocol;
Expand description

Complete unlinkable token protocol.

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impl BlindSignatureProtocol

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pub fn create_token( value: u64, expiry: u64, ) -> (TokenCommitment, UnlinkableToken, BlindingFactor)

User: Create a new token and commitment (Step 1-2).

Returns (commitment to send to issuer, token, blinding factor to keep secret).

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pub fn issue_token( issuer: &BlindSigner, commitment: &TokenCommitment, ) -> SignedCommitment

Issuer: Sign a token commitment (Step 3).

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pub fn prepare_redemption( token: UnlinkableToken, blinding: BlindingFactor, signed: SignedCommitment, ) -> RedeemableToken

User: Create redeemable token (Step 4).

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pub fn verify_and_redeem( public_key: &BlindPublicKey, redeemable: &RedeemableToken, current_time: u64, ) -> BlindResult<()>

Verifier: Verify and redeem token (Step 5).

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