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Signer

pczt::roles::low_level_signer

Struct Signer 

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pub struct Signer { /* private fields */ }

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impl Signer

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pub fn new(pczt: Pczt) -> Self

Instantiates the low-level Signer role with the given PCZT.

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pub fn sign_ironwood_with<E, F>(self, f: F) -> Result<Self, E>
where E: From<OrchardParseError>, F: FnOnce(&Pczt, &mut Bundle, &mut u8) -> Result<(), E>,

Available on crate feature orchard only.

Exposes the capability to sign the Ironwood spends.

The bundle is parsed with a preverified signing parse that skips deriving each spend’s FullViewingKey (an expensive step the spend authorization signature does not depend on). Callers that rely on the wire fvk bytes MUST have already run the full Verifier checks over the identical PCZT bytes: they are not validated here, and the signing closure sees each spend’s fvk as None.

The signing closure must not add, remove, or reorder actions. A well-behaved closure leaves the returned PCZT’s wire fvk bytes unchanged; a violating one is detected and returns OrchardParseError::SigningClosureModifiedActions, leaving the PCZT unmodified.

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pub fn sign_orchard_with<E, F>(self, f: F) -> Result<Self, E>
where E: From<OrchardParseError>, F: FnOnce(&Pczt, &mut Bundle, &mut u8) -> Result<(), E>,

Available on crate feature orchard only.

Exposes the capability to sign the Orchard spends.

The bundle is parsed with a preverified signing parse that skips deriving each spend’s FullViewingKey (an expensive step the spend authorization signature does not depend on). Callers that rely on the wire fvk bytes MUST have already run the full Verifier checks over the identical PCZT bytes: they are not validated here, and the signing closure sees each spend’s fvk as None.

The signing closure must not add, remove, or reorder actions. A well-behaved closure leaves the returned PCZT’s wire fvk bytes unchanged; a violating one is detected and returns OrchardParseError::SigningClosureModifiedActions, leaving the PCZT unmodified.

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pub fn sign_sapling_with<E, F>(self, f: F) -> Result<Self, E>
where E: From<ParseError>, F: FnOnce(&Pczt, &mut Bundle, &mut u8) -> Result<(), E>,

Available on crate feature sapling only.

Exposes the capability to sign the Sapling spends.

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pub fn sign_transparent_with<E, F>(self, f: F) -> Result<Self, E>
where E: From<ParseError>, F: FnOnce(&Pczt, &mut Bundle, &mut u8) -> Result<(), E>,

Available on crate feature transparent only.

Exposes the capability to sign the transparent spends.

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pub fn finish(self) -> Pczt

Finishes the low-level Signer role, returning the updated PCZT.

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