cryptoutils.h File Reference

#include "e2ee_common.h"

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Classes
struct	Quotient::HkdfKeys
struct	Quotient::Curve25519Encrypted

Namespaces
namespace	Quotient

Typedefs
using	Quotient::SslErrorCode = unsigned long
template<size_t Size = DefaultPbkdf2KeyLength>
using	Quotient::key_material_t = std::array< byte_t, Size >
using	Quotient::key_view_t = byte_view_t< DefaultPbkdf2KeyLength >
template<typename T >
using	Quotient::SslExpected = std::expected< T, SslErrorCode >
	Same as QOlmExpected but for wrapping OpenSSL instead of Olm calls.

Enumerations
enum	Quotient::SslErrorCodes : SslErrorCode { Quotient::SslErrorUserOffset = 128 , Quotient::WrongDerivedKeyLength = SslErrorUserOffset + 1 , Quotient::SslPayloadTooLong = SslErrorUserOffset + 2 }

Functions
QByteArray	Quotient::zeroedByteArray (QByteArray::size_type n=32)
template<size_t N, typename T = uint8_t>
consteval std::array< T, N >	Quotient::zeroes ()
template<size_t Size = DefaultPbkdf2KeyLength>
QUOTIENT_API SslExpected< key_material_t< Size > >	Quotient::pbkdf2HmacSha512 (const QByteArray &passphrase, const QByteArray &salt, int iterations)
	Generate a key out of the given passphrase.
QUOTIENT_API SslExpected< HkdfKeys >	Quotient::hkdfSha256 (key_view_t key, byte_view_t< 32 > salt, byte_view_t<> info)
	Derive a key from the input data using HKDF-SHA256.
QUOTIENT_API SslExpected< QByteArray >	Quotient::hmacSha256 (byte_view_t< HmacKeySize > hmacKey, const QByteArray &data)
	Calculate a MAC from the given key and data.
QUOTIENT_API QOlmExpected< QByteArray >	Quotient::curve25519AesSha2Decrypt (QByteArray ciphertext, const QByteArray &privateKey, const QByteArray &ephemeral, const QByteArray &mac)
	Decrypt the data using Curve25519-AES-Sha256.
QUOTIENT_API QOlmExpected< Curve25519Encrypted >	Quotient::curve25519AesSha2Encrypt (const QByteArray &plaintext, const QByteArray &publicKey)
	Encrypt the data using Curve25519-AES-Sha256.
QUOTIENT_API SslExpected< QByteArray >	Quotient::aesCtr256Encrypt (const QByteArray &plaintext, byte_view_t< Aes256KeySize > key, byte_view_t< AesBlockSize > iv)
	Encrypt data using AES-CTR-256.
QUOTIENT_API SslExpected< QByteArray >	Quotient::aesCtr256Decrypt (const QByteArray &ciphertext, byte_view_t< Aes256KeySize > key, byte_view_t< AesBlockSize > iv)
	Decrypt data using AES-CTR-256.
QUOTIENT_API std::vector< byte_t >	Quotient::base58Decode (const QByteArray &encoded)
QUOTIENT_API QByteArray	Quotient::sign (const QByteArray &key, const QByteArray &data)

Variables
constexpr auto	Quotient::DefaultPbkdf2KeyLength = 32u
constexpr auto	Quotient::Aes256KeySize = 32u
constexpr auto	Quotient::AesBlockSize = 16u
constexpr auto	Quotient::HmacKeySize = 32u