Struct base64::engine::general_purpose::GeneralPurpose

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pub struct GeneralPurpose { /* private fields */ }
Expand description

A general-purpose base64 engine.

  • It uses no vector CPU instructions, so it will work on any system.
  • It is reasonably fast (~2-3GiB/s).
  • It is not constant-time, though, so it is vulnerable to timing side-channel attacks. For loading cryptographic keys, etc, it is suggested to use the forthcoming constant-time implementation.

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impl GeneralPurpose

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pub const fn new(alphabet: &Alphabet, config: GeneralPurposeConfig) -> Self

Create a GeneralPurpose engine from an Alphabet.

While not very expensive to initialize, ideally these should be cached if the engine will be used repeatedly.

Trait Implementations§

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impl Engine for GeneralPurpose

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type Config = GeneralPurposeConfig

The config type used by this engine
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type DecodeEstimate = GeneralPurposeEstimate

The decode estimate used by this engine
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fn config(&self) -> &Self::Config

Returns the config for this engine.
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fn encode<T: AsRef<[u8]>>(&self, input: T) -> String

Encode arbitrary octets as base64 using the provided Engine. Returns a String. Read more
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fn encode_string<T: AsRef<[u8]>>(&self, input: T, output_buf: &mut String)

Encode arbitrary octets as base64 into a supplied String. Writes into the supplied String, which may allocate if its internal buffer isn’t big enough. Read more
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fn encode_slice<T: AsRef<[u8]>>( &self, input: T, output_buf: &mut [u8], ) -> Result<usize, EncodeSliceError>

Encode arbitrary octets as base64 into a supplied slice. Writes into the supplied output buffer. Read more
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fn decode<T: AsRef<[u8]>>(&self, input: T) -> Result<Vec<u8>, DecodeError>

Decode the input into a new Vec. Read more
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fn decode_vec<T: AsRef<[u8]>>( &self, input: T, buffer: &mut Vec<u8>, ) -> Result<(), DecodeError>

Decode the input into the supplied buffer. Read more
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fn decode_slice<T: AsRef<[u8]>>( &self, input: T, output: &mut [u8], ) -> Result<usize, DecodeSliceError>

Decode the input into the provided output slice. Read more
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fn decode_slice_unchecked<T: AsRef<[u8]>>( &self, input: T, output: &mut [u8], ) -> Result<usize, DecodeError>

Decode the input into the provided output slice. Read more

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type Error = Infallible

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type Error = <U as TryFrom<T>>::Error

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