Changelog

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All notable changes to this project are documented here. The format follows Keep a Changelog, and the project uses Semantic Versioning.

0.2.0 - 2026-10-22

Added

  • pc_check: :ignore option of Sinetex.open/2: skips the C10 check and picks the sender by C13 alone, for counterparties that do not fill C10/C12 with the PCs of the certificates. The default (:strict) is unchanged.
  • serial: option of Sinetex.Certificate.load/2 and Sinetex.Identity.load/3: the number to write in C11/C13, for certificates whose serial number does not fit the field or that a counterparty identifies by another number.
  • compression_level: option of Sinetex.seal/2. Without it the output is the same as before.
  • How to read a PKCS#12 file (.pfx, .p12), in the README and the guide.

Changed

  • Sinetex.open/2 accepts C07 = 0x00 when the content is not encrypted (C04 2, 3, 6 and 10), since there is no symmetric key to select. Other invalid values still give 0x04.
  • The "empty" header (§5.6.3) is also recognized with the serial number zero written as text (32 × "0") in C11 and C13. It still needs allow_clear: true.
  • inspect/1 of a Sinetex.Error shows the codes in reason as numbers, not as a charlist.

0.1.0 - 2026-10-21

Added

  • Sinetex.seal/2 and Sinetex.open/2: Security Protocol v3 (AES-256-GCM) and v2 (3DES), every C04 value, the "empty" header (allow_clear: true).
  • Sinetex.error_envelope/2 for GEN0004 answers.
  • Error table of the manual (Sinetex.Error), with the "lowest code wins" rule.
  • Sinetex.Identity and Sinetex.Certificate: PEM and DER, PKCS#1 and PKCS#8 (also encrypted), the PC code from OU=CSPB-n.
  • GZIP and ZIP compression; format detected by magic bytes when receiving; output size limit.
  • c14_errors: :uniform, trim_padding, known, certificate_check, max_input_bytes and max_output_bytes options of Sinetex.open/2.
  • Sinetex.Header and Sinetex.Serial for the header format.
  • tools/header_dump.exs, to inspect the header of an envelope without keys.