Trait digest::Mac

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pub trait Mac: OutputSizeUser + Sized {
Show 13 methods // Required methods fn new(key: &Key<Self>) -> Self where Self: KeyInit; fn new_from_slice(key: &[u8]) -> Result<Self, InvalidLength> where Self: KeyInit; fn update(&mut self, data: &[u8]); fn chain_update(self, data: impl AsRef<[u8]>) -> Self; fn finalize(self) -> CtOutput<Self>; fn finalize_reset(&mut self) -> CtOutput<Self> where Self: FixedOutputReset; fn reset(&mut self) where Self: Reset; fn verify(self, tag: &Output<Self>) -> Result<(), MacError>; fn verify_reset(&mut self, tag: &Output<Self>) -> Result<(), MacError> where Self: FixedOutputReset; fn verify_slice(self, tag: &[u8]) -> Result<(), MacError>; fn verify_slice_reset(&mut self, tag: &[u8]) -> Result<(), MacError> where Self: FixedOutputReset; fn verify_truncated_left(self, tag: &[u8]) -> Result<(), MacError>; fn verify_truncated_right(self, tag: &[u8]) -> Result<(), MacError>;
}
Expand description

Convenience wrapper trait covering functionality of Message Authentication algorithms.

This trait wraps KeyInit, Update, FixedOutput, and MacMarker traits and provides additional convenience methods.

Required Methods§

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fn new(key: &Key<Self>) -> Selfwhere Self: KeyInit,

Create new value from fixed size key.

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fn new_from_slice(key: &[u8]) -> Result<Self, InvalidLength>where Self: KeyInit,

Create new value from variable size key.

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fn update(&mut self, data: &[u8])

Update state using the provided data.

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fn chain_update(self, data: impl AsRef<[u8]>) -> Self

Process input data in a chained manner.

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fn finalize(self) -> CtOutput<Self>

Obtain the result of a Mac computation as a CtOutput and consume Mac instance.

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fn finalize_reset(&mut self) -> CtOutput<Self>where Self: FixedOutputReset,

Obtain the result of a Mac computation as a CtOutput and reset Mac instance.

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fn reset(&mut self)where Self: Reset,

Reset MAC instance to its initial state.

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fn verify(self, tag: &Output<Self>) -> Result<(), MacError>

Check if tag/code value is correct for the processed input.

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fn verify_reset(&mut self, tag: &Output<Self>) -> Result<(), MacError>where Self: FixedOutputReset,

Check if tag/code value is correct for the processed input and reset Mac instance.

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fn verify_slice(self, tag: &[u8]) -> Result<(), MacError>

Check truncated tag correctness using all bytes of calculated tag.

Returns Error if tag is not valid or not equal in length to MAC’s output.

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fn verify_slice_reset(&mut self, tag: &[u8]) -> Result<(), MacError>where Self: FixedOutputReset,

Check truncated tag correctness using all bytes of calculated tag and reset Mac instance.

Returns Error if tag is not valid or not equal in length to MAC’s output.

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fn verify_truncated_left(self, tag: &[u8]) -> Result<(), MacError>

Check truncated tag correctness using left side bytes (i.e. tag[..n]) of calculated tag.

Returns Error if tag is not valid or empty.

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fn verify_truncated_right(self, tag: &[u8]) -> Result<(), MacError>

Check truncated tag correctness using right side bytes (i.e. tag[n..]) of calculated tag.

Returns Error if tag is not valid or empty.

Implementors§