-
Notifications
You must be signed in to change notification settings - Fork 205
Test Vector for the Initial AEAD key derivation
In the early drafts, the clear text messages of Quic were protected by an FNV1A checksum. Draft-07 replaces that by AEAD encryption, in which the keys are derived from a version specific salt combined with the initial connection ID. Then draft-09 changed some of tags associated with the derivation, draft-10 both introduced a new salt and changed the key expansion process, draft-14 changed the labels, and, finally, draft-17 changed the salt, the KDF function, and the labels.
Early interop tests of draft-07 showed that a test vector for the key derivation would be useful. They still are for the new versions. They were updated for draft-09, draft-10, draft-14, draft-17, draft-21, and now draft-23.
The connection ID used in the test vector is:
0xc654efd8a31b4792
This version number corresponds to draft-23, which says:
initial_salt = c3eef712c72ebb5a11a7d2432bb46365bef9f502
initial_secret = HKDF-Extract(initial_salt,
client_dst_connection_id)
client_initial_secret = HKDF-Expand-Label(initial_secret,
"client in", "",
Hash.length)
server_initial_secret = HKDF-Expand-Label(initial_secret,
"server in", "",
Hash.length)
The parameters to the computation are the initial_salt, and the
initial connection ID, serialized as 8 bytes:
0xc6, 0x54, 0xef, 0xd8, 0xa3, 0x1b, 0x47, 0x92
The 32-byte initial secret will be:
0x75, 0xd6, 0x24, 0x73, 0x4b, 0xae, 0x0a, 0x61,
0xaa, 0xf1, 0xba, 0x83, 0xbd, 0x23, 0xdb, 0xc5,
0x68, 0x3d, 0x68, 0xad, 0x35, 0x90, 0xbb, 0x5d,
0x79, 0x42, 0xaf, 0xcc, 0xca, 0x9b, 0x5e, 0x36
The label used as parameter to QHKDF expand the clear text secret and produce the client secret is 19 bytes long:
0x00, 0x20, 0x0f, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20,
0x69, 0x6e, 0x00,
The 32 bytes client initial secret will be:
0x9d, 0x72, 0xf9, 0x4e, 0x8b, 0x97, 0xfd, 0x31,
0xbd, 0x72, 0x32, 0x03, 0x7f, 0x56, 0x6d, 0x58,
0x15, 0x8f, 0x09, 0xc2, 0x1f, 0x71, 0x71, 0x4a,
0xee, 0xde, 0x79, 0xbb, 0x37, 0xfb, 0x0e, 0x4a
This will produce the following key, IV, and HP key:
Client AEAD Key (16 bytes):
0xfc, 0x4a, 0x14, 0x7a, 0x7e, 0xe9, 0x70, 0x29,
0x1b, 0x8f, 0x1c, 0x03, 0x2d, 0x2c, 0x40, 0xf9
Client AEAD IV (12 bytes):
0x1e, 0x6a, 0x5d, 0xdb, 0x7c, 0x1d, 0x1a, 0xa7,
0xa0, 0xfd, 0x70, 0x05
Client AEAD HP Key (16 bytes):
0x43, 0x1d, 0x22, 0x82, 0xb4, 0x7b, 0xb9, 0x3f,
0xeb, 0xd2, 0xcf, 0x19, 0x85, 0x21, 0xe2, 0xbe
The label used as parameter to HKDF expand the handshake secret and produce the server secret is 19 bytes long:
0x00, 0x20, 0x0f, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20,
0x69, 0x6e, 0x00,
The 32 bytes server initial secret will be:
0xc9, 0xa8, 0x7c, 0xc6, 0x02, 0x21, 0x82, 0x33,
0x99, 0xf1, 0x68, 0xd7, 0x54, 0xa9, 0xc6, 0x46,
0x6a, 0x92, 0x9c, 0xd6, 0xa6, 0x0a, 0x13, 0xe3,
0xc7, 0x3c, 0x8e, 0x99, 0x37, 0x9b, 0x0e, 0x38
This will produce the following key, IV, and HP key:
Server AEAD key (16 bytes):
0x60, 0xc0, 0x2f, 0xa6, 0x12, 0x1e, 0xb1, 0xab,
0xa4, 0x35, 0x1f, 0x2a, 0x63, 0xb0, 0xac, 0xf8
Server AEAD IV (12 bytes):
0x38, 0x0d, 0xf3, 0xc0, 0xf2, 0x8d, 0x94, 0x07,
0x76, 0x5c, 0x55, 0xa1
Server AEAD HP Key (16 bytes):
0x92, 0xe8, 0x67, 0xb1, 0x20, 0xb1, 0x3f, 0x40,
0x9c, 0x1a, 0xa8, 0xef, 0x54, 0x30, 0x53, 0x51
The connection ID used in the test vector is:
0xc654efd8a31b4792
This version number corresponds to draft-21, which says:
initial_salt = 0x7fbcdb0e7c66bbe9193a96cd21519ebd7a02644a
initial_secret = HKDF-Extract(initial_salt,
client_dst_connection_id)
client_initial_secret = HKDF-Expand-Label(initial_secret,
"client in", "",
Hash.length)
server_initial_secret = HKDF-Expand-Label(initial_secret,
"server in", "",
Hash.length)
The parameters to the computation are the initial_salt, and the
initial connection ID, serialized as 8 bytes:
0xc6, 0x54, 0xef, 0xd8, 0xa3, 0x1b, 0x47, 0x92
The 32-byte initial secret will be:
0x23, 0x37, 0x55, 0x67, 0xbc, 0x4f, 0xe8, 0x14,
0x22, 0x59, 0x7f, 0xbf, 0x24, 0xb3, 0x0a, 0x01,
0x3c, 0xb1, 0x24, 0xae, 0x37, 0x09, 0x4d, 0xf7,
0x1c, 0xbb, 0xd7, 0x98, 0xff, 0x24, 0x33, 0xb6
The label used as parameter to QHKDF expand the clear text secret and produce the client secret is 19 bytes long:
0x00, 0x20, 0x0f, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20,
0x69, 0x6e, 0x00,
The 32 bytes client initial secret will be:
0xf3, 0x30, 0x76, 0x33, 0x57, 0xe7, 0x8b, 0xa3,
0xc9, 0x48, 0xa5, 0xbb, 0xbe, 0x28, 0xaa, 0x2a,
0x38, 0x6c, 0x10, 0xc7, 0xf4, 0x32, 0xd8, 0x97,
0xa7, 0x7e, 0x2b, 0x24, 0x4b, 0x03, 0x05, 0x33
This will produce the following key, IV, and HP key:
Client AEAD Key (16 bytes):
0xd4, 0xe4, 0x3d, 0x22, 0x68, 0xf8, 0xe4, 0x3b,
0xab, 0x1c, 0xa6, 0x7a, 0x36, 0x80, 0x46, 0x0f
Client AEAD IV (12 bytes):
0x67, 0x1f, 0x1c, 0x3d, 0x21, 0xde, 0x47, 0xff,
0x01, 0x8b, 0x11, 0x3b
Client AEAD HP Key (16 bytes):
0xed, 0x6c, 0x63, 0x14, 0xdd, 0xc8, 0x69, 0xa5,
0x94, 0x19, 0x74, 0x42, 0x87, 0x71, 0x39, 0x83
The label used as parameter to HKDF expand the handshake secret and produce the server secret is 19 bytes long:
0x00, 0x20, 0x0f, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20,
0x69, 0x6e, 0x00,
The 32 bytes server initial secret will be:
0x5e, 0x84, 0x2c, 0xcb, 0x6c, 0xac, 0x42, 0xa7,
0x22, 0x48, 0xbd, 0x57, 0xd3, 0x30, 0x64, 0x65,
0xd3, 0xde, 0x66, 0x50, 0x64, 0x1e, 0x1f, 0xb1,
0x34, 0xdc, 0x87, 0xf5, 0x4a, 0xc8, 0xad, 0x74
This will produce the following key, IV, and HP key:
Server AEAD key (16 bytes):
0x9d, 0xa3, 0x3b, 0xa0, 0x27, 0x46, 0xa3, 0xd3,
0x58, 0x12, 0x89, 0xc0, 0x19, 0x9c, 0x3a, 0xf2,
Server AEAD IV (12 bytes):
0xe6, 0x9c, 0x4e, 0xaf, 0xce, 0x11, 0x3d, 0xb5,
0x70, 0xb9, 0x4c, 0x0c
Server AEAD HP Key (16 bytes):
0xc5, 0x0f, 0x34, 0x99, 0x5b, 0x8a, 0xa7, 0x16,
0x08, 0x7b, 0x64, 0x87, 0x6e, 0xdd, 0x68, 0x38
The connection ID used in the test vector is:
0xc654efd8a31b4792
This version number corresponds to draft-17, which says:
initial_salt = 0xef4fb0abb47470c41befcf8031334fae485e09a0
initial_secret = HKDF-Extract(initial_salt,
client_dst_connection_id)
client_initial_secret = HKDF-Expand-Label(initial_secret,
"client in", "",
Hash.length)
server_initial_secret = HKDF-Expand-Label(initial_secret,
"server in", "",
Hash.length)
The parameters to the computation are the initial_salt, and the
initial connection ID, serialized as 8 bytes:
0xc6, 0x54, 0xef, 0xd8, 0xa3, 0x1b, 0x47, 0x92
The 32-byte handshake secret will be:
0x5f, 0x8d, 0xa5, 0x94, 0xfe, 0xca, 0x72, 0xc1,
0x0f, 0x9e, 0xc8, 0x78, 0x81, 0x11, 0x05, 0x57,
0x81, 0xa9, 0x6f, 0x6a, 0x06, 0x53, 0x58, 0xbf,
0xb4, 0x5a, 0xba, 0x4b, 0xc0, 0x37, 0xf3, 0xb2,
The label used as parameter to QHKDF expand the clear text secret and produce the client secret is 19 bytes long:
0x00, 0x20, 0x0f, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20,
0x69, 0x6e, 0x00,
The 32 bytes client clear text secret will be:
0x0c, 0x74, 0xbb, 0x95, 0xa1, 0x04, 0x8e, 0x52,
0xef, 0x3b, 0x72, 0xe1, 0x28, 0x89, 0x35, 0x1c,
0xd7, 0x3a, 0x55, 0x0f, 0xb6, 0x2c, 0x4b, 0xb0,
0x87, 0xe9, 0x15, 0xcc, 0xe9, 0x6c, 0xe3, 0xa0
This will produce the following key, IV, and HP key:
Client AEAD Key (16 bytes):
0x86, 0xd1, 0x83, 0x04, 0x80, 0xb4, 0x0f, 0x86,
0xcf, 0x9d, 0x68, 0xdc, 0xad, 0xf3, 0x5d, 0xfe,
Client AEAD IV (12 bytes):
0x12, 0xf3, 0x93, 0x8a, 0xca, 0x34, 0xaa, 0x02,
0x54, 0x31, 0x63, 0xd4,
Client AEAD HP Key (16 bytes):
0xcd, 0x25, 0x3a, 0x36, 0xff, 0x93, 0x93, 0x7c,
0x46, 0x93, 0x84, 0xa8, 0x23, 0xaf, 0x6c, 0x56,
The label used as parameter to HKDF expand the handshake secret and produce the server secret is 19 bytes long:
0x00, 0x20, 0x0f, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20,
0x69, 0x6e, 0x00,
The 32 bytes server handshake secret will be:
0x4c, 0x9e, 0xdf, 0x24, 0xb0, 0xe5, 0xe5, 0x06,
0xdd, 0x3b, 0xfa, 0x4e, 0x0a, 0x03, 0x11, 0xe8,
0xc4, 0x1f, 0x35, 0x42, 0x73, 0xd8, 0xcb, 0x49,
0xdd, 0xd8, 0x46, 0x41, 0x38, 0xd4, 0x7e, 0xc6,
This will produce the following key, IV, and HP key:
Server AEAD key (16 bytes):
0x2c, 0x78, 0x63, 0x3e, 0x20, 0x6e, 0x99, 0xad,
0x25, 0x19, 0x64, 0xf1, 0x9f, 0x6d, 0xcd, 0x6d,
Server AEAD IV (12 bytes):
0x7b, 0x50, 0xbf, 0x36, 0x98, 0xa0, 0x6d, 0xfa,
0xbf, 0x75, 0xf2, 0x87,
Server AEAD HP Key (16 bytes):
0x25, 0x79, 0xd8, 0x69, 0x6f, 0x85, 0xed, 0xa6,
0x8d, 0x35, 0x02, 0xb6, 0x55, 0x96, 0x58, 0x6b,
The connection ID and version number used in the test vector are:
Initial connection ID: 0x8394c8f03e515708
Version: 0xff00000e
This version number corresponds to draft-14, which says:
handshake_salt = 0x9c108f98520a5c5c32968e950e8a2c5fe06d6c38
handshake_secret = HKDF-Extract(quic_version_1_salt,
client_connection_id)
client_handshake_secret =
QHKDF-Expand(handshake_secret, "client in",
Hash.length)
server_handshake_secret =
QHKDF-Expand(handshake_secret, "server in",
Hash.length)
The parameters to the computation are the quic_version1_salt, and the initial connection ID, serialized as 8 bytes:
0x83, 0x94, 0xc8, 0xf0, 0x3e, 0x51, 0x57, 0x08
The 32-byte handshake secret will be:
0xa5, 0x72, 0xb0, 0x24, 0x5a, 0xf1, 0xed, 0xdf,
0x5c, 0x61, 0xc6, 0xe3, 0xf7, 0xf9, 0x30, 0x4c,
0xa6, 0x6b, 0xfb, 0x4c, 0xaa, 0xf7, 0x65, 0x67,
0xd5, 0xcb, 0x8d, 0xd1, 0xdc, 0x4e, 0x82, 0x0b
The label used as parameter to QHKDF expand the clear text secret and produce the client secret is 18 bytes long:
0x00, 0x20, 0x0e, 0x71, 0x75, 0x69, 0x63, 0x20,
0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20, 0x69,
0x6e, 0x00,
The 32 bytes client clear text secret will be:
0x9f, 0x53, 0x64, 0x57, 0xf3, 0x2a, 0x1e, 0x0a,
0xe8, 0x64, 0xbc, 0xb3, 0xca, 0xf1, 0x23, 0x51,
0x10, 0x63, 0x0e, 0x1d, 0x1f, 0xb3, 0x38, 0x35,
0xbd, 0x05, 0x41, 0x70, 0xf9, 0x9b, 0xf7, 0xdc,
This will produce the following key, IV, and PN key:
Client AEAD Key (16 bytes):
0xf2, 0x92, 0x8f, 0x26, 0x14, 0xad, 0x6c, 0x20,
0xb9, 0xbd, 0x00, 0x8e, 0x9c, 0x89, 0x63, 0x1c,
Client AEAD IV (12 bytes):
0xab, 0x95, 0x0b, 0x01, 0x98, 0x63, 0x79, 0x78,
0xcf, 0x44, 0xaa, 0xb9,
Client AEAD PN Key (16 bytes):
0x68, 0xc3, 0xf6, 0x4e, 0x2d, 0x66, 0x34, 0x41,
0x2b, 0x8e, 0x32, 0x94, 0x62, 0x8d, 0x76, 0xf1
The label used as parameter to HKDF expand the handshake secret and produce the server secret is 18 bytes long:
0x00, 0x20, 0x0e, 0x71, 0x75, 0x69, 0x63, 0x20,
0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20, 0x69,
0x6e, 0x00,
The 32 bytes server handshake secret will be:
0xb0, 0x87, 0xdc, 0xd7, 0x47, 0x8d, 0xda, 0x8a,
0x85, 0x8f, 0xbf, 0x3d, 0x60, 0x5c, 0x88, 0x85,
0x86, 0xc0, 0xa3, 0xa9, 0x87, 0x54, 0x23, 0xad,
0x4f, 0x11, 0x4f, 0x0b, 0xa3, 0x8e, 0x5a, 0x2e,
This will produce the following key, IV, and PN key:
Server AEAD key (16 bytes):
0xf5, 0x68, 0x17, 0xd0, 0xfc, 0x59, 0x5c, 0xfc,
0x0a, 0x2b, 0x0b, 0xcf, 0xb1, 0x87, 0x35, 0xec,
Server AEAD IV (12 bytes):
0x32, 0x05, 0x03, 0x5a, 0x3c, 0x93, 0x7c, 0x90,
0x2e, 0xe4, 0xf4, 0xd6,
Server AEAD PN Key (16 bytes):
0xa3, 0x13, 0xc8, 0x6d, 0x13, 0x73, 0xec, 0xbc,
0xcb, 0x32, 0x94, 0xb1, 0x49, 0x74, 0x22, 0x6c
The connection ID and version number used in the test vector are:
Initial connection ID: 0x8394c8f03e515708
Version: 0xff00000a
This version number corresponds to draft-10, which says:
handshake_salt = 0x9c108f98520a5c5c32968e950e8a2c5fe06d6c38
handshake_secret = HKDF-Extract(quic_version_1_salt,
client_connection_id)
client_handshake_secret =
QHKDF-Expand(handshake_secret, "client hs",
Hash.length)
server_handshake_secret =
QHKDF-Expand(handshake_secret, "server hs",
Hash.length)
The parameters to the computation are the quic_version1_salt, and the initial connection ID, serialized as 8 bytes:
0x83, 0x94, 0xc8, 0xf0, 0x3e, 0x51, 0x57, 0x08
The 32-byte handshake secret will be:
0xa5, 0x72, 0xb0, 0x24, 0x5a, 0xf1, 0xed, 0xdf,
0x5c, 0x61, 0xc6, 0xe3, 0xf7, 0xf9, 0x30, 0x4c,
0xa6, 0x6b, 0xfb, 0x4c, 0xaa, 0xf7, 0x65, 0x67,
0xd5, 0xcb, 0x8d, 0xd1, 0xdc, 0x4e, 0x82, 0x0b
The label used as parameter to QHKDF expand the clear text secret and produce the client secret is 17 bytes long:
0x00, 0x20, 0x0e, 0x51, 0x55, 0x49, 0x43, 0x20,
0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20, 0x68,
0x73
The 32 bytes client clear text secret will be:
0x83, 0x55, 0xf2, 0x1a, 0x3d, 0x8f, 0x83, 0xec,
0xb3, 0xd0, 0xf9, 0x71, 0x08, 0xd3, 0xf9, 0x5e,
0x0f, 0x65, 0xb4, 0xd8, 0xae, 0x88, 0xa0, 0x61,
0x1e, 0xe4, 0x9d, 0xb0, 0xb5, 0x23, 0x59, 0x1d
This will produce the following key and IV:
Client AEAD Key (16 bytes):
0x3a, 0xd0, 0x54, 0x2c, 0x4a, 0x85, 0x84, 0x74,
0x00, 0x63, 0x04, 0x9e, 0x3b, 0x3c, 0xaa, 0xb2
Client AEAD IV (12 bytes):
0xd1, 0xfd, 0x26, 0x05, 0x42, 0x75, 0x3a, 0xba,
0x38, 0x58, 0x9b, 0xad
The label used as parameter to HKDF expand the handshake secret and produce the server secret is 17 bytes long:
0x00, 0x20, 0x0e, 0x51, 0x55, 0x49, 0x43, 0x20,
0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20, 0x68,
0x73
The 32 bytes server handshake secret will be:
0xf8, 0x0e, 0x57, 0x71, 0x48, 0x4b, 0x21, 0xcd,
0xeb, 0xb5, 0xaf, 0xe0, 0xa2, 0x56, 0xa3, 0x17,
0x41, 0xef, 0xe2, 0xb5, 0xc6, 0xb6, 0x17, 0xba,
0xe1, 0xb2, 0xf1, 0x5a, 0x83, 0x04, 0x83, 0xd6,
This will produce the following key and IV:
Server AEAD key (16 bytes):
0xbe, 0xe4, 0xc2, 0x4d, 0x2a, 0xf1, 0x33, 0x80,
0xa9, 0xfa, 0x24, 0xa5, 0xe2, 0xba, 0x2c, 0xff
Server IV (12 bytes):
0x25, 0xb5, 0x8e, 0x24, 0x6d, 0x9e, 0x7d, 0x5f,
0xfe, 0x43, 0x23, 0xfe
The connection ID and version number used in the test vector are:
Initial connection ID: 0x8394c8f03e515708
Version: 0xff000009
This version number corresponds to draft-09, which says:
quic_version_1_salt = afc824ec5fc77eca1e9d36f37fb2d46518c36639
handshake_secret = HKDF-Extract(quic_version_1_salt,
client_connection_id)
client_handshake_secret =
QHKDF-Expand(handshake_secret, "client hs",
Hash.length)
server_handshake_secret =
QHKDF-Expand(handshake_secret, "server hs",
Hash.length)
The parameters to the computation are the quic_version1_salt, and the initial connection ID, serialized as 8 bytes:
0x83, 0x94, 0xc8, 0xf0, 0x3e, 0x51, 0x57, 0x08
The 32-byte handshake secret will be:
0x8f, 0x01, 0x00, 0x67, 0x9c, 0x96, 0x5a, 0xc5,
0x9f, 0x28, 0x3a, 0x02, 0x52, 0x2a, 0x6e, 0x43,
0xcf, 0xae, 0xf6, 0x3c, 0x45, 0x48, 0xb0, 0xa6,
0x8f, 0x91, 0x91, 0x40, 0xee, 0x7d, 0x9a, 0x48
The label used as parameter to HKDF expand the clear text secret and produce the client secret is 18 bytes long:
0x00, 0x20, 0x0e, 0x51, 0x55, 0x49, 0x43, 0x20,
0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x20, 0x68,
0x73, 0x00
The 32 bytes client clear text secret will be:
0x8e, 0x28, 0x6a, 0x27, 0x38, 0xe6, 0x66, 0x50,
0xb4, 0xf8, 0x8f, 0xac, 0x5d, 0xc5, 0xd0, 0xef,
0x7d, 0x36, 0x9b, 0x07, 0xd4, 0x74, 0x42, 0x99,
0x1a, 0x00, 0x0c, 0x55, 0xac, 0xc4, 0x0c, 0xf4
This will produce the following key and IV:
Client AEAD Key (16 bytes):
0x6b, 0x6a, 0xbc, 0x50, 0xf7, 0xac, 0x46, 0xd1,
0x10, 0x8c, 0x19, 0xcc, 0x63, 0x64, 0xbd, 0xe3
Client AEAD IV (12 bytes):
0xb1, 0xf9, 0xa7, 0xe2, 0x7c, 0xc2, 0x33, 0xbb,
0x99, 0xe2, 0x03, 0x71
The label used as parameter to HKDF expand the handshake secret and produce the server secret is 18 bytes long:
0x00, 0x20, 0x0e, 0x51, 0x55, 0x49, 0x43, 0x20,
0x73, 0x65, 0x72, 0x76, 0x65, 0x72, 0x20, 0x68,
0x73, 0x00
The 32 bytes server handshake secret will be:
0xfa, 0xb5, 0xb7, 0xf5, 0x26, 0xec, 0xaf, 0xaf,
0x74, 0x71, 0x52, 0xdd, 0xaa, 0x88, 0x28, 0x56,
0xf9, 0xbe, 0xd7, 0x48, 0x81, 0x1e, 0x37, 0xff,
0xe1, 0xcb, 0xb1, 0x55, 0xe1, 0xc9, 0x91, 0xad
This will produce the following key and IV:
Server AEAD key (16 bytes):
0x9e, 0xe7, 0xe8, 0x57, 0x72, 0x00, 0x59, 0xaf,
0x30, 0x11, 0xfb, 0x26, 0xe1, 0x21, 0x42, 0xc9
Server IV (12 bytes):
0xd5, 0xee, 0xe8, 0xb5, 0x7c, 0x9e, 0xc7, 0xc4,
0xbe, 0x98, 0x4a, 0xa5
The connection ID and version number used in the test vector are:
Initial connection ID: 0x8394c8f03e515708
Version: 0xff000007
This version number corresponds to draft-07, which says:
quic_version_1_salt = afc824ec5fc77eca1e9d36f37fb2d46518c36639
cleartext_secret = HKDF-Extract(quic_version_1_salt,
client_connection_id)
client_cleartext_secret =
HKDF-Expand-Label(cleartext_secret,
"QUIC client cleartext Secret",
"", Hash.length)
server_cleartext_secret =
HKDF-Expand-Label(cleartext_secret,
"QUIC server cleartext Secret",
"", Hash.length)
The parameters to the computation are the quic_version1_salt, and the initial connection ID, serialized as 8 bytes:
0x83, 0x94, 0xc8, 0xf0, 0x3e, 0x51, 0x57, 0x08
The 32 bytes clear text secret will be:
0x8f, 0x01, 0x00, 0x67, 0x9c, 0x96, 0x5a, 0xc5,
0x9f, 0x28, 0x3a, 0x02, 0x52, 0x2a, 0x6e, 0x43,
0xcf, 0xae, 0xf6, 0x3c, 0x45, 0x48, 0xb0, 0xa6,
0x8f, 0x91, 0x91, 0x40, 0xee, 0x7d, 0x9a, 0x48
The label used as parameter to HKDF expand the clear text secret and produce the client secret is 38 bytes long:
0x00, 0x20, 0x22, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x51, 0x55, 0x49, 0x43, 0x20, 0x63, 0x6c,
0x69, 0x65, 0x6e, 0x74, 0x20, 0x63, 0x6c, 0x65,
0x61, 0x72, 0x74, 0x65, 0x78, 0x74, 0x20, 0x53,
0x65, 0x63, 0x72, 0x65, 0x74, 0x00
The 32 bytes client clear text secret will be:
0x31, 0xba, 0x96, 0x68, 0x73, 0xf7, 0xf4, 0x53,
0xe6, 0xc8, 0xa1, 0xbf, 0x78, 0xed, 0x70, 0x13,
0xfa, 0xd8, 0x3f, 0xfc, 0xee, 0xfc, 0x95, 0x68,
0x81, 0xcd, 0x24, 0x1c, 0x0a, 0xe3, 0xa7, 0xa6
This will produce the following key and IV:
Client AEAD Key (16 bytes):
0x2e, 0xbd, 0x78, 0x00, 0xdb, 0xed, 0x20, 0x10,
0xe5, 0xa2, 0x1c, 0x4a, 0xd2, 0x4b, 0x4e, 0xc3
Client AEAD IV (12 bytes):
0x55, 0x44, 0x0d, 0x5f, 0xf7, 0x50, 0x3d, 0xe4,
0x99, 0x7b, 0xfd, 0x6b
The label used as parameter to HKDF expand the clear text secret and produce the server secret is 38 bytes long:
0x00, 0x20, 0x22, 0x74, 0x6c, 0x73, 0x31, 0x33,
0x20, 0x51, 0x55, 0x49, 0x43, 0x20, 0x73, 0x65,
0x72, 0x76, 0x65, 0x72, 0x20, 0x63, 0x6c, 0x65,
0x61, 0x72, 0x74, 0x65, 0x78, 0x74, 0x20, 0x53,
0x65, 0x63, 0x72, 0x65, 0x74, 0x00
The 32 bytes server clear text secret will be:
0x91, 0xa9, 0xe4, 0x22, 0x2c, 0xcb, 0xb9, 0xa9,
0x8f, 0x14, 0xc8, 0xe1, 0xbe, 0xfd, 0x6a, 0x79,
0xf0, 0x4e, 0x42, 0xa2, 0x4f, 0xbe, 0xb4, 0x83,
0x1f, 0x50, 0x26, 0x80, 0x7a, 0xe8, 0x4c, 0xc3
This will produce the following key and IV:
Server AEAD key (16 bytes):
0xc8, 0xea, 0x1b, 0xc1, 0x71, 0xe5, 0x2b, 0xae,
0x71, 0xfb, 0x78, 0x39, 0x52, 0xc7, 0xb8, 0xfc
Server IV (12 bytes):
0x57, 0x82, 0x3b, 0x85, 0x2c, 0x7e, 0xf9, 0xe3,
0x80, 0x2b, 0x69, 0x0b