diff --git a/cryptoki/src/object.rs b/cryptoki/src/object.rs
index 7680da3c..ab1ce944 100644
--- a/cryptoki/src/object.rs
+++ b/cryptoki/src/object.rs
@@ -94,6 +94,8 @@ pub enum AttributeType {
     ObjectId,
     /// DER encoding of the attribute certificate's subject field
     Owner,
+    /// Algorithm-specific parameter set
+    ParameterSet,
     /// Prime number value of a key
     Prime,
     /// The prime `p` of an RSA private key
@@ -108,6 +110,10 @@ pub enum AttributeType {
     PublicExponent,
     /// DER-encoding of the SubjectPublicKeyInfo
     PublicKeyInfo,
+    /// Profile ID
+    ProfileId,
+    /// Seed to derive private key
+    Seed,
     /// Determines if the key is sensitive
     Sensitive,
     /// DER encoding of the certificate serial number
@@ -144,10 +150,6 @@ pub enum AttributeType {
     Wrap,
     /// Indicates that the key can only be wrapped with a wrapping key that has the Trusted attribute
     WrapWithTrusted,
-    /// Seed to derive private key
-    Seed,
-    /// Algorithm-specific parameter set
-    ParameterSet,
 }
 
 impl AttributeType {
@@ -269,6 +271,7 @@ impl AttributeType {
             CKA_UNIQUE_ID => String::from(stringify!(CKA_UNIQUE_ID)),
             CKA_SEED => String::from(stringify!(CKA_SEED)),
             CKA_PARAMETER_SET => String::from(stringify!(CKA_PARAMETER_SET)),
+            CKA_PROFILE_ID => String::from(stringify!(CKA_PROFILE_ID)),
             CKA_VENDOR_DEFINED..=CK_ULONG::MAX => {
                 format!("{}_{}", stringify!(CKA_VENDOR_DEFINED), val)
             }
@@ -331,6 +334,7 @@ impl From<AttributeType> for CK_ATTRIBUTE_TYPE {
             AttributeType::Prime2 => CKA_PRIME_2,
             AttributeType::Private => CKA_PRIVATE,
             AttributeType::PrivateExponent => CKA_PRIVATE_EXPONENT,
+            AttributeType::ProfileId => CKA_PROFILE_ID,
             AttributeType::PublicExponent => CKA_PUBLIC_EXPONENT,
             AttributeType::PublicKeyInfo => CKA_PUBLIC_KEY_INFO,
             AttributeType::Seed => CKA_SEED,
@@ -405,6 +409,7 @@ impl TryFrom<CK_ATTRIBUTE_TYPE> for AttributeType {
             CKA_PRIME_2 => Ok(AttributeType::Prime2),
             CKA_PRIVATE => Ok(AttributeType::Private),
             CKA_PRIVATE_EXPONENT => Ok(AttributeType::PrivateExponent),
+            CKA_PROFILE_ID => Ok(AttributeType::ProfileId),
             CKA_PUBLIC_EXPONENT => Ok(AttributeType::PublicExponent),
             CKA_PUBLIC_KEY_INFO => Ok(AttributeType::PublicKeyInfo),
             CKA_SEED => Ok(AttributeType::Seed),
@@ -526,6 +531,8 @@ pub enum Attribute {
     Private(bool),
     /// The private exponent `d`
     PrivateExponent(Vec<u8>),
+    /// The Profile ID
+    ProfileId(ProfileIdType),
     /// Public exponent value of a key
     PublicExponent(Vec<u8>),
     /// DER-encoding of the SubjectPublicKeyInfo
@@ -618,6 +625,7 @@ impl Attribute {
             Attribute::Prime2(_) => AttributeType::Prime2,
             Attribute::Private(_) => AttributeType::Private,
             Attribute::PrivateExponent(_) => AttributeType::PrivateExponent,
+            Attribute::ProfileId(_) => AttributeType::ProfileId,
             Attribute::PublicExponent(_) => AttributeType::PublicExponent,
             Attribute::PublicKeyInfo(_) => AttributeType::PublicKeyInfo,
             Attribute::Seed(_) => AttributeType::Seed,
@@ -698,6 +706,7 @@ impl Attribute {
             Attribute::Prime1(bytes) => bytes.len(),
             Attribute::Prime2(bytes) => bytes.len(),
             Attribute::PrivateExponent(bytes) => bytes.len(),
+            Attribute::ProfileId(_) => size_of::<CK_PROFILE_ID>(),
             Attribute::PublicExponent(bytes) => bytes.len(),
             Attribute::PublicKeyInfo(bytes) => bytes.len(),
             Attribute::Seed(bytes) => bytes.len(),
@@ -792,6 +801,7 @@ impl Attribute {
             | Attribute::Id(bytes) => bytes.as_ptr() as *mut c_void,
             // Unique types
             Attribute::ParameterSet(val) => val as *const _ as *mut c_void,
+            Attribute::ProfileId(val) => val as *const _ as *mut c_void,
             Attribute::CertificateType(certificate_type) => {
                 certificate_type as *const _ as *mut c_void
             }
@@ -922,6 +932,9 @@ impl TryFrom<CK_ATTRIBUTE> for Attribute {
             AttributeType::Value => Ok(Attribute::Value(val.to_vec())),
             AttributeType::Id => Ok(Attribute::Id(val.to_vec())),
             // Unique types
+            AttributeType::ProfileId => Ok(Attribute::ProfileId(ProfileIdType {
+                val: CK_ULONG::from_ne_bytes(val.try_into()?),
+            })),
             AttributeType::ParameterSet => Ok(Attribute::ParameterSet(ParameterSetType {
                 val: CK_ULONG::from_ne_bytes(val.try_into()?).into(),
             })),
@@ -1278,6 +1291,12 @@ impl ObjectClass {
     pub const MECHANISM: ObjectClass = ObjectClass { val: CKO_MECHANISM };
     /// An OTP key object
     pub const OTP_KEY: ObjectClass = ObjectClass { val: CKO_OTP_KEY };
+    /// Profile object
+    pub const PROFILE: ObjectClass = ObjectClass { val: CKO_PROFILE };
+    /// Validation object
+    pub const VALIDATION: ObjectClass = ObjectClass {
+        val: CKO_VALIDATION,
+    };
 
     pub(crate) fn stringify(class: CK_OBJECT_CLASS) -> String {
         match class {
@@ -1290,6 +1309,8 @@ impl ObjectClass {
             CKO_DOMAIN_PARAMETERS => String::from(stringify!(CKO_DOMAIN_PARAMETERS)),
             CKO_MECHANISM => String::from(stringify!(CKO_MECHANISM)),
             CKO_OTP_KEY => String::from(stringify!(CKO_OTP_KEY)),
+            CKO_PROFILE => String::from(stringify!(CKO_PROFILE)),
+            CKO_VALIDATION => String::from(stringify!(CKO_VALIDATION)),
             _ => format!("unknown ({class:08x})"),
         }
     }
@@ -1329,6 +1350,8 @@ impl TryFrom<CK_OBJECT_CLASS> for ObjectClass {
             CKO_DOMAIN_PARAMETERS => Ok(ObjectClass::DOMAIN_PARAMETERS),
             CKO_MECHANISM => Ok(ObjectClass::MECHANISM),
             CKO_OTP_KEY => Ok(ObjectClass::OTP_KEY),
+            CKO_PROFILE => Ok(ObjectClass::PROFILE),
+            CKO_VALIDATION => Ok(ObjectClass::VALIDATION),
 
             _ => {
                 error!("Object class {} is not supported.", object_class);
@@ -1708,3 +1731,94 @@ impl TryFrom<CK_CERTIFICATE_TYPE> for CertificateType {
         }
     }
 }
+
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
+#[repr(transparent)]
+/// The PKCS#11 Profile ID
+///
+/// The profiles and their meaning is defined in the following document:
+///
+/// <https://docs.oasis-open.org/pkcs11/pkcs11-profiles/v3.1/os/pkcs11-profiles-v3.1-os.html>
+pub struct ProfileIdType {
+    val: CK_PROFILE_ID,
+}
+
+impl ProfileIdType {
+    /// Baseline Provider
+    pub const BASELINE_PROFIDER: ProfileIdType = ProfileIdType {
+        val: CKP_BASELINE_PROVIDER,
+    };
+    /// Extended Provider
+    pub const EXTENDED_PROFIDER: ProfileIdType = ProfileIdType {
+        val: CKP_EXTENDED_PROVIDER,
+    };
+    /// Authentication Token Provider or Consumer
+    pub const AUTHENTICATION_TOKEN: ProfileIdType = ProfileIdType {
+        val: CKP_AUTHENTICATION_TOKEN,
+    };
+    /// Public Certificates Token Provider or Consumer
+    pub const PUBLIC_CERTIFICATES_TOKEN: ProfileIdType = ProfileIdType {
+        val: CKP_PUBLIC_CERTIFICATES_TOKEN,
+    };
+    /// Complete Provider
+    pub const COMPLETE_PROVIDER: ProfileIdType = ProfileIdType {
+        val: CKP_COMPLETE_PROVIDER,
+    };
+    /// HKDF TLS Token
+    pub const HKDF_TLS_TOKEN: ProfileIdType = ProfileIdType {
+        val: CKP_HKDF_TLS_TOKEN,
+    };
+
+    pub(crate) fn stringify(profile_id: CK_PROFILE_ID) -> String {
+        match profile_id {
+            CKP_BASELINE_PROVIDER => String::from(stringify!(CKP_BASELINE_PROVIDER)),
+            CKP_EXTENDED_PROVIDER => String::from(stringify!(CKP_EXTENDED_PROVIDER)),
+            CKP_AUTHENTICATION_TOKEN => String::from(stringify!(CKP_AUTHENTICATION_TOKEN)),
+            CKP_PUBLIC_CERTIFICATES_TOKEN => {
+                String::from(stringify!(CKP_PUBLIC_CERTIFICATES_TOKEN))
+            }
+            CKP_COMPLETE_PROVIDER => String::from(stringify!(CKP_COMPLETE_PROVIDER)),
+            CKP_HKDF_TLS_TOKEN => String::from(stringify!(CKP_HKDF_TLS_TOKEN)),
+            _ => format!("unknown ({profile_id:08x})"),
+        }
+    }
+}
+
+impl std::fmt::Display for ProfileIdType {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}", ProfileIdType::stringify(self.val))
+    }
+}
+
+impl Deref for ProfileIdType {
+    type Target = CK_PROFILE_ID;
+
+    fn deref(&self) -> &Self::Target {
+        &self.val
+    }
+}
+
+impl From<ProfileIdType> for CK_PROFILE_ID {
+    fn from(profile_id: ProfileIdType) -> Self {
+        *profile_id
+    }
+}
+
+impl TryFrom<CK_PROFILE_ID> for ProfileIdType {
+    type Error = Error;
+
+    fn try_from(profile_id: CK_PROFILE_ID) -> Result<Self> {
+        match profile_id {
+            CKP_BASELINE_PROVIDER => Ok(ProfileIdType::BASELINE_PROFIDER),
+            CKP_EXTENDED_PROVIDER => Ok(ProfileIdType::EXTENDED_PROFIDER),
+            CKP_AUTHENTICATION_TOKEN => Ok(ProfileIdType::AUTHENTICATION_TOKEN),
+            CKP_PUBLIC_CERTIFICATES_TOKEN => Ok(ProfileIdType::PUBLIC_CERTIFICATES_TOKEN),
+            CKP_COMPLETE_PROVIDER => Ok(ProfileIdType::COMPLETE_PROVIDER),
+            CKP_HKDF_TLS_TOKEN => Ok(ProfileIdType::HKDF_TLS_TOKEN),
+            _ => {
+                error!("Profile Id {} is not supported.", profile_id);
+                Err(Error::NotSupported)
+            }
+        }
+    }
+}
diff --git a/cryptoki/src/session/object_management.rs b/cryptoki/src/session/object_management.rs
index 3cec80d3..95ea7db7 100644
--- a/cryptoki/src/session/object_management.rs
+++ b/cryptoki/src/session/object_management.rs
@@ -224,7 +224,7 @@ impl Session {
     /// * [`ObjectHandleIterator`] for more information on how to use the iterator
     /// * [`Session::iter_objects_with_cache_size`] for a way to specify the cache size
     #[inline(always)]
-    pub fn iter_objects(&self, template: &[Attribute]) -> Result<ObjectHandleIterator> {
+    pub fn iter_objects(&self, template: &[Attribute]) -> Result<ObjectHandleIterator<'_>> {
         self.iter_objects_with_cache_size(template, MAX_OBJECT_COUNT)
     }
 
@@ -248,7 +248,7 @@ impl Session {
         &self,
         template: &[Attribute],
         cache_size: NonZeroUsize,
-    ) -> Result<ObjectHandleIterator> {
+    ) -> Result<ObjectHandleIterator<'_>> {
         let template: Vec<CK_ATTRIBUTE> = template.iter().map(Into::into).collect();
         ObjectHandleIterator::new(self, template, cache_size)
     }