Function add_snp_id_block_temp_key 

pub(crate) fn add_snp_id_block_temp_key(
    igvm_data: &[u8],
    guest_svn: u32,
    identity: SnpImageIdentity,
) -> Result<Vec<u8>>

Add an SNP ID block signed by an ephemeral key (development/test only).

The SNP launch digest is taken from the measurement that [IgvmSerializer::new] computes eagerly, so the file is measured exactly once. A random ECDSA P-384 key signs the block in-process. Production flows should instead use add_snp_id_block_signed with an out-of-band signature.

Arguments

• igvm_data - Input IGVM file; must contain an SEV-SNP platform header and a matching [IgvmInitializationHeader::GuestPolicy].
• guest_svn - Guest security version number to embed.
• identity - Family and image identifiers to embed.

Errors

Returns an error if the file has no SEV-SNP platform, already contains an SNP ID block, lacks an SNP measurement/guest policy, or if signing fails.