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// Copyright 2015-2016 Brian Smith. // // Permission to use, copy, modify, and/or distribute this software for any // purpose with or without fee is hereby granted, provided that the above // copyright notice and this permission notice appear in all copies. // // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY // SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. // *R* and *r* in Montgomery math refer to different things, so we always use // `R` to refer to *R* to avoid confusion, even when that's against the normal // naming conventions. Also the standard camelCase names are used for `KeyPair` // components. /// RSA signatures. use crate::{bits, der, error, limb}; use untrusted; mod padding; // `RSA_PKCS1_SHA1` is intentionally not exposed. #[cfg(feature = "rsa_signing")] pub use self::padding::RSAEncoding; pub use self::padding::{ RSA_PKCS1_SHA256, RSA_PKCS1_SHA384, RSA_PKCS1_SHA512, RSA_PSS_SHA256, RSA_PSS_SHA384, RSA_PSS_SHA512, }; // Maximum RSA modulus size supported for signature verification (in bytes). const PUBLIC_KEY_PUBLIC_MODULUS_MAX_LEN: usize = bigint::MODULUS_MAX_LIMBS * limb::LIMB_BYTES; // Keep in sync with the documentation comment for `KeyPair`. #[cfg(feature = "rsa_signing")] const PRIVATE_KEY_PUBLIC_MODULUS_MAX_BITS: bits::BitLength = bits::BitLength(4096); /// Parameters for RSA verification. pub struct RSAParameters { padding_alg: &'static padding::RSAVerification, min_bits: bits::BitLength, id: RSAParametersID, } enum RSAParametersID { RSA_PKCS1_2048_8192_SHA1, RSA_PKCS1_2048_8192_SHA256, RSA_PKCS1_2048_8192_SHA384, RSA_PKCS1_2048_8192_SHA512, RSA_PKCS1_3072_8192_SHA384, RSA_PSS_2048_8192_SHA256, RSA_PSS_2048_8192_SHA384, RSA_PSS_2048_8192_SHA512, } fn parse_public_key( input: untrusted::Input, ) -> Result<(untrusted::Input, untrusted::Input), error::Unspecified> { input.read_all(error::Unspecified, |input| { der::nested(input, der::Tag::Sequence, error::Unspecified, |input| { let n = der::positive_integer(input)?; let e = der::positive_integer(input)?; Ok((n, e)) }) }) } // Type-level representation of an RSA public modulus *n*. See // `super::bigint`'s modulue-level documentation. #[derive(Copy, Clone)] pub enum N {} pub mod verification; #[cfg(feature = "rsa_signing")] pub mod signing; mod bigint;