COSE (CBOR Object Signing and Encryption)

CBOR Object Signing and Encryption (COSE) implementation. More...

Collaboration diagram for COSE (CBOR Object Signing and Encryption):

Classes
class	uniot::COSEMessage
	Implementation of COSE_Sign1 message format as specified in RFC 8152. More...
class	uniot::ICOSESigner
	Interface for CBOR Object Signing and Encryption (COSE) signing operations. More...

Enumerations
enum	uniot::COSETag {   uniot::Sign = 98 , uniot::Sign1 = 18 , uniot::Encrypted = 96 , uniot::Encrypted1 = 16 ,   uniot::Mac = 97 , uniot::Mac0 = 17 }
	CBOR tag values that identify the type of COSE message. More...
enum	uniot::COSEHeaderLabel {   uniot::Algorithm = 1 , uniot::Critical = 2 , uniot::ContentType = 3 , uniot::KeyIdentifier = 4 ,   uniot::IV = 5 , uniot::PartialIV = 6 , uniot::CounterSignature = 7 , uniot::CounterSignature0 = 9 }
	Common header parameter labels for COSE messages. More...
enum	uniot::COSEAlgorithm {   uniot::PS256 = -37 , uniot::PS384 = -38 , uniot::PS512 = -39 , uniot::ES256 = -7 ,   uniot::ES384 = -35 , uniot::ES512 = -36 , uniot::EdDSA = -8 }
	Cryptographic algorithm identifiers for COSE. More...

Detailed Description

CBOR Object Signing and Encryption (COSE) implementation.

Provides enumerations for working with COSE (RFC 8152), which defines how to create and process signatures, message authentication codes, and encryption using CBOR for IoT applications.

COSE uses CBOR encoding and provides similar functionality to JOSE (JSON Object Signing and Encryption) but with a more compact representation.

See also

https://tools.ietf.org/html/rfc8152

Enumeration Type Documentation

COSEAlgorithm

enum uniot::COSEAlgorithm

Cryptographic algorithm identifiers for COSE.

These values identify cryptographic algorithms used in COSE messages. Negative values are used for crypto algorithms as per the COSE standard. The algorithms are described in RFC 8152 Sections 8, 9, and 10.

Enumerator
PS256	-37	RSASSA-PSS w/ SHA-256.
PS384	-38	RSASSA-PSS w/ SHA-384.
PS512	-39	RSASSA-PSS w/ SHA-512.
ES256	-7	ECDSA w/ SHA-256.
ES384	-35	ECDSA w/ SHA-384.
ES512	-36	ECDSA w/ SHA-512.
EdDSA	-8	EdDSA signature algorithm.

COSEHeaderLabel

enum uniot::COSEHeaderLabel

Common header parameter labels for COSE messages.

These integer values identify header parameters in the protected and unprotected header maps of COSE messages, as defined in RFC 8152 Section 3.

Enumerator
Algorithm	1	Cryptographic algorithm used (label 1)
Critical	2	Critical headers that must be understood (label 2)
ContentType	3	Content type of the payload (label 3)
KeyIdentifier	4	Key identifier (kid) (label 4)
IV	5	Initialization Vector (label 5)
PartialIV	6	Partial Initialization Vector (label 6)
CounterSignature	7	Counter signature (label 7)
CounterSignature0	9	Counter signature w/o countersigner (label 9)

COSETag

enum uniot::COSETag

CBOR tag values that identify the type of COSE message.

These tags are used in CBOR encoding to indicate the COSE message type. Each tag corresponds to a specific security operation defined in RFC 8152.

Enumerator
Sign	98	Multiple signature (tag 98) - COSE_Sign.
Sign1	18	Single signature (tag 18) - COSE_Sign1.
Encrypted	96	Multiple recipient encrypted data (tag 96) - COSE_Encrypt.
Encrypted1	16	Single recipient encrypted data (tag 16) - COSE_Encrypt0.
Mac	97	Multiple recipient MAC (tag 97) - COSE_Mac.
Mac0	17	Single recipient MAC (tag 17) - COSE_Mac0.