trezor-firmware/legacy/firmware/protob/messages-crypto.options

CipherKeyValue.address_n                max_count:8
CipherKeyValue.key                      max_size:256
CipherKeyValue.value                    max_size:1024
CipherKeyValue.iv                       max_size:16

CipheredKeyValue.value                  max_size:1024

CosiCommit.address_n                    max_count:8
CosiCommit.data                         max_size:32

CosiCommitment.commitment               max_size:32
CosiCommitment.pubkey                   max_size:32

CosiSign.address_n                      max_count:8
CosiSign.data                           max_size:32
CosiSign.global_commitment              max_size:32
CosiSign.global_pubkey                  max_size:32

CosiSignature.signature                 max_size:32

SignIdentity.challenge_hidden           max_size:256
SignIdentity.challenge_visual           max_size:256
SignIdentity.ecdsa_curve_name           max_size:32

SignedIdentity.address                  max_size:130
SignedIdentity.public_key               max_size:33
SignedIdentity.signature                max_size:65

IdentityType.proto                      max_size:9
IdentityType.user                       max_size:64
IdentityType.host                       max_size:64
IdentityType.port                       max_size:6
IdentityType.path                       max_size:256

GetECDHSessionKey.peer_public_key       max_size:65
GetECDHSessionKey.ecdsa_curve_name      max_size:32

ECDHSessionKey.session_key              max_size:65
ECDHSessionKey.public_key               max_size:33