Man pages matching name tspi_key_convertmigrationblob in section 3:

Tspi_Key_ConvertMigrationBlob.3.en	debian 10 / libtspi-dev
Tspi_Key_ConvertMigrationBlob.3.en	debian 11 / libtspi-dev
Tspi_Key_ConvertMigrationBlob.3.en	debian 12 / libtspi-dev