Add support for BCRYPT_RNG_ALG_HANDLE
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@ -1 +1 @@
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8c6ce6b91b172f77c795a74bfeaf74b865146b3f
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47d1cdb0bcac8e417071ce1929d261efe2399ae2
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@ -288,20 +288,33 @@ fn emulate_foreign_item_by_name(
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let [algorithm, ptr, len, flags] =
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this.check_shim(abi, Abi::System { unwind: false }, link_name, args)?;
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let algorithm = this.read_scalar(algorithm)?;
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let algorithm = algorithm.to_machine_usize(this)?;
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let ptr = this.read_pointer(ptr)?;
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let len = this.read_scalar(len)?.to_u32()?;
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let flags = this.read_scalar(flags)?.to_u32()?;
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if flags != 2 {
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// ^ BCRYPT_USE_SYSTEM_PREFERRED_RNG
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match flags {
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0 => {
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// BCRYPT_RNG_ALG_HANDLE
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if algorithm != 0x81 {
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throw_unsup_format!(
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"BCryptGenRandom is supported only with the BCRYPT_USE_SYSTEM_PREFERRED_RNG flag"
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"BCryptGenRandom algorithm must be BCRYPT_RNG_ALG_HANDLE when the flag is 0"
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);
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}
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if algorithm.to_machine_usize(this)? != 0 {
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}
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2 => {
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// BCRYPT_USE_SYSTEM_PREFERRED_RNG
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if algorithm != 0 {
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throw_unsup_format!(
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"BCryptGenRandom algorithm must be NULL when the flag is BCRYPT_USE_SYSTEM_PREFERRED_RNG"
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);
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}
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}
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_ => {
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throw_unsup_format!(
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"BCryptGenRandom is only supported with BCRYPT_USE_SYSTEM_PREFERRED_RNG or BCRYPT_RNG_ALG_HANDLE"
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);
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}
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}
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this.gen_random(ptr, len.into())?;
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this.write_null(dest)?; // STATUS_SUCCESS
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}
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